Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 8163221 | Process for producing reinforcing fiber molding A method of forming, on a strip-shaped laminate of multiple reinforcing fiber sheets superimposed one upon another, two flexures with respect to the cross-section configuration thereof, wherein in the forming of the two flexures with the use of two flexure forming d... | 04/24/2012 |
| 7871553 | Process for forming curved thermoplastic composite material A process for forming curved thermoplastic composite material. According to an illustrative embodiment, the process includes providing a length of straight thermoplastic material; pre-forming the length of straight thermoplastic material into a selected cross-sectio... | 01/18/2011 |
| 7608213 | Thermoplastic sheet forming apparatus and method There are provided apparatuses and related methods for forming sheets. The formed sheets can be formed of a thermoplastic material, such as flat sheets of reinforced thermoplastic, which can be lightweight, strong, and perform well in flammability, smoke, and toxici... | 10/27/2009 |
| 7455802 | Stress release method and apparatus A stress/strain relief process for a flexible, multilayered web stock includes providing a multilayered web stock including at least one layer to be treated, the at least one layer to be treated having a coefficient of thermal expansion significantly differing from ... | 11/25/2008 |
| 7384586 | Method for flexing a web An apparatus and method for flexing a web is disclosed. The web passes over two co-rotating members, such as rollers or belts, which are separated by a small adjustable gap. The web travels around the first rotating member, is peeled off in the vicinity of the gap, ... | 06/10/2008 |
| 7378048 | Method for forming catheter curves A method and apparatus for forming catheters and catheter curves using ferromagnetic materials exposed to an alternating magnetic field. Heat is generated in the exposed ferromagnetic material. The temperature of the ferromagnetic material is allowed to reach a desi... | 05/27/2008 |
| 7357166 | Flexible mandrel for highly contoured composite stringer An aircraft stringer lay-up assembly is provided comprising a contoured curing block and a first mandrel element positioned thereon. The first mandrel assembly includes a first bar assembly having a plurality of rigidity reducing first slots formed along a first man... | 04/15/2008 |
| 7320773 | Biodegradable laminate sheet and molded item from biodegradable laminate sheet A biodegradable laminate sheet having as its object to provide a formed body superior in heat resistance, shock resistance, transparency and formability, and having non-stretched polylactic acid-family resin layer of which the crystallinity is 20% or less, and a lay... | 01/22/2008 |
| 7191801 | Apparatus and method for installation of pipe liner An apparatus and method for lining sewer pipes that utilize an adjustable form configured to conform to the shape and dimensions of the interior of a man-entry sized pipe line. The adjustable form can be used to position a sheet of liner material immediately adjacen... | 03/20/2007 |
| 7182903 | Endless belt member stress relief Multilayered web stock is directed toward a curved surface and at least one layer of the web stock is heated to a temperature above a glass transition temperature of the at least one layer of the web stock. The heating can occur just before or upon engaging the curv... | 02/27/2007 |
| 7097804 | Thermoplastic laminate duct A duct formed of a thermoplastic material is lightweight, strong, flame and smoke resistant, and non-toxic. The duct is formed from a flat laminate and does not require a specialized, disposable mandrel for supporting conventional thermoset plies. Preferably, the du... | 08/29/2006 |
| 7097803 | Process of making a corrugated net material The present invention is to provide a process of making a corrugated net material including the following steps. First prepare a net material with an adequate length, and then heat and soften the net material by means of a heating element. March the soften net mater... | 08/29/2006 |
| 6997969 | Filter material and method A filter is provided including a synthetic filter material formed into a filter structure and having at least one embossment having a depth of at least about 1.5 mm, preferably at least about 4.0 mm, and more preferably at least about 5.0 mm. A method for making the... | 02/14/2006 |
| 6902672 | Open-channeled spiral-wound membrane module There is disclosed a spiral-wound membrane module design for various membrane filtration techniques having significantly reduced fluid flow resistance in the feed stream path. Specifically, the inventive spiral-wound membrane module is designed having a corrugated e... | 06/07/2005 |
| 6878329 | Method of making a catheter balloon using a polyimide covered mandrel A method of making a catheter balloon or other tubular medical device or component, in which a sheet of polymeric material is wrapped on a mandrel and heated to fuse sections of the wrapped sheet together to form a tube. The mandrel has a metallic core and a jacket ... | 04/12/2005 |
| 6818167 | Method of manufacturing rubber crawler In a method of manufacturing a rubber crawler through a first vulcanization step and a second vulcanization step using an upper mold, a middle mold and a lower mold, at least the middle mold is heated at each vulcanization step, and a vulcanizing circumferential len... | 11/16/2004 |
| 6790402 | Method of making complex shaped articles The complex shaped articles are formed by trimming, cutting and shaping a honeycomb core material to a desired size and shape, deforming the sized and shaped honeycomb core material at ambient temperature; permanently setting the shape and contour of the sized and s... | 09/14/2004 |
| 6767493 | Rubber crawler producing method It is to provide a method of manufacturing a rubber crawler which enhances a degree of freedom in the handling in a vulcanization-shaping of a crawler part and largely improves vulcanization shapability and operability and facilitates an arrangement of an auxiliary ... | 07/27/2004 |
| 6726974 | Thermoplastic folded honeycomb structure and method for the production thereof A thermoplastic folded honeycomb structure and method for the production thereof A strip of material is plastically deformed perpendicular to the plane of the material and folded in the direction of conveyance until the cell walls meet and are joined. ... | 04/27/2004 |
| 6660199 | Pipe structure and method of manufacture A pipe section formed of a polymeric material which has a substantially constant thickness throughout, the terminal edge of the female connection having a reinforcement structure which rigidifies the end of the female connection and prevents deformation, ... | 12/09/2003 |
| 6656400 | Method for producing a pleatable filter material from a nonwoven fabric A method for producing a pleated filter material from a nonwoven fabric having spacers for the pleated folds formed from the filter material itself, a formed fabric made of stretched synthetic fibers and thermoplastic and/or thermally cross-linked binding... | 12/02/2003 |
| 6565747 | Spiral wound type separation membrane element A spiral wound type separation membrane element includes a spiral wound type membrane component formed by superposing separation membranes of membrane materials supported on nonwoven fabric members on both surfaces of a permeated liquid passage forming me... | 05/20/2003 |
| 6511727 | Flat strip lamella for reinforcing building components and method for their production Flat strip lamella for reinforcing weight-carrying or weight-transferring building components. It has a composite structure consisting of a plurality of pliant or loose-flex supporting fibers (26) aligned parallel to each other, and a binding matrix (28) ... | 01/28/2003 |
| 6485660 | Reinforced composite product and apparatus and method for producing same A rebar forming apparatus includes a malleable material supply station for continuously supplying a malleable planar material and a malleable material forming station for forming the malleable material into first and second corresponding shell portions an... | 11/26/2002 |
| 6451410 | Flexible, cut resistant, and abrasion resistant sheet material and method for making same The present invention provides a sheet of crystallizable material, having opposed first and second surfaces, the sheet comprising: (a) a plurality of crystalline regions located in the first surface; and (b) an amorphous matrix surrounding and separating ... | 09/17/2002 |
| 6423258 | Machine and method for providing folded pipe liners A machine and method for providing a folded liner for insertion into a pipe, comprises an upper section and a lower section. A flattened heated thermoplastic liner is fed downwardly through the upper section to the lower section, where it is redirected an... | 07/23/2002 |
| 6296655 | Catheter balloon with biased multiple wings A balloon catheter for dilating a stenotic region of a patient's body lumen such as an artery or for the implantation of an expandable stent within a patient's body lumen. The balloon of the catheter has a plurality of canted wings which are inclined at a... | 10/02/2001 |
| 6283743 | Balloon wrap device Apparatus for sequentially forming, wrapping and compressing a catheter balloon either during the initial manufacturing process or after a medical procedure. The balloon may be formed, wrapped and compressed by simply advancing the balloon through a ballo... | 09/04/2001 |
| 6264454 | Wrapped SMC charge method and apparatus A transfer/injection molding apparatus and process is defined that includes a charge forming unit. The charge is formed so that the fibers therein are randomly oriented in substantially parallel horizontal planes such that they are always substantially pa... | 07/24/2001 |
| 6228307 | Method and device for bending a component made of a thermoplastic material and the component itself The invention is directed to a method and a device for bending a component (71) made of a thermoplastic material, and to the component (71) itself, in particular a sleeve-shaped component having a straight shank (72), for use in a personal care appliance ... | 05/08/2001 |
| 6221299 | Structuring process that stiffens and protects the surface of thin material webs The present invention provides a profiling process which allows for the material sheet to be profiled so that the surface is minimally affected and only slight plastic deformation of the material occurs, and yet uniform three-dimensional structuring takes... | 04/24/2001 |
| 6221295 | Reinforced composite product and apparatus and method for producing same A rebar forming apparatus includes a malleable material supply station for continuously supplying a malleable planar material and a malleable material forming station for forming the malleable material into first and second corresponding shell portions an... | 04/24/2001 |
| 6217811 | Process and apparatus for vault-structuring of thin material sheets According to the invention thin sheets of foil are stiffened in a particular way by means of vault-structuring. The vault-structuring occurs either by self-organizing or following a self-organized design with a spade-shaped or drop-shaped pattern.... | 04/17/2001 |
| 6203739 | Method of manufacture of insulation for use in stator slot wedges A slitting and scoring machine includes an upper tooling roller and a lower tooling roller that cooperate to define a tooling nip. Each tooling roller includes an alternating series of coaxially arranged annular knives, annular dies, and annular mandrels.... | 03/20/2001 |
| 6174483 | Laminate configuration for reinforcing glulam beams A reinforcing lamina sheet and a process of making a reinforcing sheet for use in a glue laminated beam. The reinforcing lamina sheet increases the compressive and/or tensile strength of the glue laminate beam. The lamina sheet is formed from unidirection... | 01/16/2001 |
| 6036903 | Method of making an annular friction liner An annular friction liner, especially for use in a friction device of a motor vehicle, is made by a method in which a straight strip of friction material, having a width substantially equal to the required final width of the liner, is deformed into a cont... | 03/14/2000 |
| 5910279 | Method for forming durable creases in cellulosic fiber textile Creases are formed in a cellulosic fiber textile by treating the fiber textile with liquid ammonia, creasing the fiber textile, and treating the fiber textile with hot water or alkaline solution substantially simultaneous with or subsequent to the creasin... | 06/08/1999 |
| 5871682 | Weather strip and a core breaking machine for partially breaking the core of weather strip A weather strip is formed in an integral structure comprising: a welt part to be put on a flange formed on the edge of an opening in the body of an automobile, a sealing part protruding from the outer side wall of the welt part; and a core formed by punch... | 02/16/1999 |
| 5795512 | Method and apparatus for reducing curl in wound rolls of photographic film A method for reducing curl in a stored photographic film which aids in preventing serious difficulties with downstream film transport and handling of the film. The film, which has been stored as a roll wound on a first core or mandrel is unwound from the ... | 08/18/1998 |
| 5772938 | Composite storage tank having double wall characteristics A composite storage tank is built which has double wall characteristics. A method of building the tank comprises the steps of applying a viscous resinous core material to a support surface and then winding onto, into or along with the viscous resinous cor... | 06/30/1998 |
