Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 5830311 | Corrugating apparatus Corrugating apparatus that includes paddles and an ultrasonic welding device. The paddles are attached at one end to a belt that moves about a path. The paddles extend radially from the belt, and each paddle has a free end that supports a web as the paddl... | 11/03/1998 |
| 5753343 | Corrugated nonwoven webs of polymeric microfiber A composite structure contains a lofty corrugated nonwoven web of polymeric microfiber that is maintained in a corrugated condition by securing a fabric to the corrugated web at the valleys of the corrugations. The composite structure is made without subs... | 05/19/1998 |
| 5674605 | Retroreflective transfer sheet and applique A retroreflective applique is provided that includes a layer of optical lens elements partially embedded in and protruding from a transfer adhesive layer prepared from ingredients comprising a vinyl plastisol and a substantially nonhydrolyzed aminosilane ... | 10/07/1997 |
| 5667335 | Fiber reinforced raised pavement marker and method of making A fiber-reinforced raised pavement marker made of a composite material comprising an isotropic mixture of a polymeric material, reinforcing fibers and a filler material. The results of finite element analysis and composite technology have been combined to... | 09/16/1997 |
| 5656368 | Fibrous filtration face mask having corrugated polymeric microfiber filter layer A composite structure contains a lofty corrugated nonwoven web of polymeric microfiber that is maintained in a corrugated condition by securing a fabric to the corrugated web at the valleys of the corrugations. The composite structure is made without subs... | 08/12/1997 |
| 5647480 | Flexible pressure vessels for and method of transporting hazardous materials A flexible pressure vessel 20 having an aperture 44 through one wall 30 of the vessel 20, which aperture 44 can be closed by a closure flap 50 having sufficient surface area of adhesive 52 to completely surround the aperture 44. The adhesive 52 has suffic... | 07/15/1997 |
| 5645938 | Retroreflective article containing a polyester polyurethane binder layer A retroreflective article 10 includes retroreflective elements 12 partially embedded in a binder layer 14 that comprises a polyester polyurethane polymer. The polyurethane polymer is a reaction product of (i) a polyester polyol that contains an aromatic n... | 07/08/1997 |
| 5643507 | Filter media having an undulated surface Filter media is provided. The filter media comprises a web of melt blown microfibers having one surface substantially flat and the other surface having periodic wrinkle-like undulations. A method of making the filter media is also provided. The filter med... | 07/01/1997 |
| 5639700 | Thermal insulation containing corrugated nonwoven web of polymeric microfiber Thermal insulation contains a corrugated nonwoven web and a means for retaining the shape of a corrugated web. The shape-retaining means is not coextensive with the corrugated nonwoven web and is secured to the valleys of the corrugations. The corrugated ... | 06/17/1997 |
| 5631064 | Retroreflective transfer sheet and applique The present invention relates to retroreflective transfer sheets and graphic images produced therefrom, i.e., appliques. The retroreflective applique includes: a layer of optical lens elements partially embedded in and protruding from the front surface of... | 05/20/1997 |
| 5620759 | Container protected by a conformable sorbent sleeve Container that holds a fluid is disposed in a conformable sleeve that has a tubular body and an opening. The tubular body comprises a nonwoven web that contains microfibers, and the opening is sized to permit the container to enter the tubular body's inte... | 04/15/1997 |
| 5620613 | Retroreflective transfer sheet material method A transfer sheet material for forming retroreflective graphic images on a substrate, the sheet material comprising a monolayer of transparent microspheres; a color layer printed over the microspheres in a first graphic segment of the sheet material in an ... | 04/15/1997 |
| 5620545 | Method of making a corrugated nonwoven web of polymeric microfiber A method of making a corrugated nonwoven web of polymeric microfiber, which method comprises: (a) introducing a nonwoven web of polymeric microfiber having a solidity of 0.1 or less into a corrugating apparatus that has a plurality of paddles secured at a... | 04/15/1997 |
| 5617849 | Respirator having thermochromic fit-indicating seal Respirator 10 has a respirator body 11 that is configured to fit over the nose and mouth of a wearer. A thermochromic material 18 is positioned on the respirator body 11 such that the thermochromic material 18 makes thermal contact with the wearer's face ... | 04/08/1997 |
| 5612119 | Transfer article for forming retroreflective and colored images and method of making same A transfer for decorating surfaces comprises microspheres that are embedded about one-fourth to one-half the microsphere's diameter in a support sheet. The embedded portion of the microspheres have a reflective layer associated therewith to allow a retror... | 03/18/1997 |
| 5597427 | Method of making multilayer nonwoven thermal insulating batts A multilayer nonwoven thermal insulating batt is provided. The batt comprises a blend of bonding staple fibers and staple fill fibers, the fibers being formed into a multilayer batt. The bonding fibers are subsequently bonded sparingly to staple fill fibe... | 01/28/1997 |
| 5593246 | Patterned chalk-resistant pavement marking and method of making A pavement marking 10 includes a base sheet 12, a barrier layer 30, a layer 32 of bonding material, a multitude of optical elements 34, and skid-resistant particles 36. The base sheet 12 contains rubber and fillers and has a number of protuberances 14 pro... | 01/14/1997 |
| 5579761 | Respirator having snap-fit filter cartridge A respirator (10) that includes a face piece (14) and a cartridge receiving structure (22) located on the face piece (14). The face piece (14) is sized to fit snugly over the nose and mouth of a person, and the filter cartridge (12) is capable of being ma... | 12/03/1996 |
| 5578251 | Method of preparing polar disulfone-functionalized molecules A process for preparing polar disulfone-functionalized molecules, which process comprises performing one or more of the following reactions: (i) reacting a vinyl ether disulfone molecule with an activated aromatic molecule, an activated heterocyclic molecule, ... | 11/26/1996 |
| 5558089 | Respirator nose clip A nose clip 12 useful for fitting a respirator 10 over a person's nose. The nose clip 12 includes a non-linear strip 18 that has first and second wings 20 and 22 and a midsection 24. There are first, second, and third inflections 26, 28, and 30 disposed, ... | 09/24/1996 |
| 5510178 | Transfer article for forming tetroreflective and colored images and method of making same A transfer with durable images comprising a support sheet having a monolayer of transparent microspheres that are partially embedded in the support sheet with a specularly reflecting layer covering the parts of the surfaces of the microspheres which are e... | 04/23/1996 |
| 5509436 | Unidirectional fluid valve An exhalation valve 14 for a filtering face mask 10 has a flexible flap 24 that makes contact with a curved seal ridge 30 of a valve seat 26 when the valve 14 is in the closed position. The curvature of the seal ridge 30 corresponds to a deformation curve... | 04/23/1996 |
| 5503906 | Retroreflective transfer sheet material A transfer sheet material for forming retroreflective graphic images on a substrate, the sheet material comprising a monolayer of transparent microspheres; a color layer printed over the microspheres in a first graphic segment of the sheet material in an ... | 04/02/1996 |
| 5496785 | Dual impregnated activated carbon A dual-impregnated activated carbon composition includes activated carbon impregnated with a Group 6-12 metal salt and a Group 1 metal carbonate salt, where the molar ratio on the activated carbon of the Group 1 metal to the Group 6-12 metal is 1 or great... | 03/05/1996 |
| 5491021 | Truck trailer cover having a high strength non-chlorinated multi-layered polymeric article A truck trailer cover 40 includes a multi-layered article 10 that is dimensioned and adapted to be fitted over and secured to a truck trailer 42. The multi-layered article, 10 includes a fabric 12 having a polymeric sheet 14, 16 secured to each side of th... | 02/13/1996 |
| 5480705 | High strength non-chlorinated multi-layered polymeric article A multi-layered article 10 includes a fabric 12 having a polymeric sheet 14, 16 secured to each side of the fabric 12. Each polymeric sheet 14, 16 secured to the fabric 12 has two non-chlorinated polymeric layers. The first non-chlorinated polymeric layer... | 01/02/1996 |
| 5478628 | Non-woven fluorescent retrorefletive fabric A high visibility fabric having a non-woven web material with a fluorescent layer. The fluorescent pigment concentration in the fabric is greater proximate a designated fabric outer surface than at other outer surfaces of the fabric. The fabric is used fo... | 12/26/1995 |
| 5474827 | Retroreflective article and method of making the same A retroreflective article (100, 200, 300) includes a monolayer of retroreflective elements (120, 220, 320), a binder layer (110, 210, 310), and a compound comprising an aromatic bidentate moiety. The retroreflective elements (120, 220, 320) are partially ... | 12/12/1995 |
| 5464117 | Separation-science membrane dispenser A separation-science disc dispenser (10) has a storage chamber (12) disposed normally to a base (20) that possesses a slot (24) into which a slidable member (26) resides. The storage chamber (12) contains disc units (14) that include a separation-science ... | 11/07/1995 |
| 5464010 | Convenient "drop-down" respirator harness structure and method of use A respirator 15 has a harness 10 that allows the respirator body 20 to be conveniently disposed beneath a wearer's chin when not in use. The harness 10 includes a substantially flat, flexible strap 14 and an element 12 that contains a curved elongated slo... | 11/07/1995 |
| 5454951 | Separation-science medium support plate A separation-science medium support plate has a multiplicity of concentric, radially-spaced grooves located on an upstream side of the plate. The concentric, radially-spaced grooves each have two open ends that allow a groove to communicate, ultimately, w... | 10/03/1995 |
| 5451437 | Method and article for protecting a container that holds a fluid A method and article for protecting a container that contains a fluid. The method includes the steps of: (a) providing a container that holds a fluid and that has first and second ends, a side, and a length; (b) providing a conformable nonwoven web that contai... | 09/19/1995 |
| 5450235 | Flexible cube-corner retroreflective sheeting A retroreflective article 10 has a body portion 14 and a multitude of cube-comer elements 12 that project from a rear side 20 of the body portion 14. The body portion 14 includes a body layer 18 that contains a light-transmissible polymeric material havin... | 09/12/1995 |
| 5433902 | Method of making a rigid tubular article A mandrel for making a rigid tubular article that has integrally-formed straight and arcuate portions. The mandrel has a plurality of shape-providing elements slidably disposed on interconnected straight and arcuate rods. After a rigid tubular article has... | 07/18/1995 |
| 5403489 | Solid phase extraction method and apparatus A method and apparatus for performing solid phase extraction (SPE) on a fluid that contains solubles and suspended solids. The method includes: (a) providing a volume of fluid that contains solubles and suspended solids, (b) processing the volume of fluid... | 04/04/1995 |
| 5391298 | Method for performing a solid-phase extraction under pressurized conditions A method of performing a solid phase extraction on an aqueous fluid using a hydrophobic, solid-phase extraction medium (40), which method comprises: (a) placing (10) a hydrophobic, solid-phase extraction medium (40) inside of a pressurizable housing (18) havin... | 02/21/1995 |
| 5383573 | Separation-science membrane dispenser A separation-science disc dispenser (10) has a storage chamber (12) disposed normally to a base (20) that possesses a slot (24) into which a slidable member (26) resides. The storage chamber (12) contains disc units (14) that include a separation-science ... | 01/24/1995 |
| 5360582 | Nonlinear optical materials containing polar disulfone-functionalized molecules Nonlinear optical (NLO) compositions are disclosed which contain polar disulfone-functionalized molecules (PDFMs) incorporated in a polymeric material. When aligned noncentrosymmetrically in the polymeric material, the PDFMs generate a second-order NLO re... | 11/01/1994 |
| 5350139 | Mandrel for making a rigid tubular article A mandrel for making a rigid tubular article that has integrally-formed straight and arcuate portions. The mandrel has a plurality of shape-providing elements slidably disposed on interconnected straight and arcuate rods. After a rigid tubular article has... | 09/27/1994 |
| 5344626 | Dual impregnated activated carbon A dual-impregnated activated carbon composition includes activated carbon impregnated with a Group 6-12 metal salt and a Group 1 metal carbonate salt, where the molar ratio on the activated carbon of the Group 1 metal to the Group 6-12 metal is 1 or great... | 09/06/1994 |
