...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7081078 | Infusion packages and corresponding manufacturing methods A method of manufacturing an infusion package 10 comprising a porous-walled container 12 for an infusible substance and a support for the container by means of which the container can be mounted on a rim of a drinking vessel. The method comprises (i) m... | 07/25/2006 |
| 6910995 | Easy open feature for reclosable bags having a longitudinal fin seal A method of making a reclosable plastic bag (38) having a fin seal (35) which provides a weakness area (23, 80, 81, 84, 86) that extends into at least one side of the fin seal (35). Perforation axes (19, 20) for opening the reclosa... | 06/28/2005 |
| 6860843 | Package, package manufacturing method and package manufacturing system for carrying out the package manufacturing method A pair of superposed laminated films are fed by a web feed unit, and a longitudinal heat-sealing unit and a lateral heat-sealing unit unite together the pair of films by heat-sealing. A notch and tearing incision forming unit forms notches and tearing incisions in t... | 03/01/2005 |
| 6793613 | Bag blocks A block of bags for a product filling process includes a plurality of bags stacked in overlying relationship. Each bag of the block has a top edge, a bag mouth and opposite first and second side edges. First and second weakened segments extend from adjacent edge poi... | 09/21/2004 |
| 6517473 | Device and method for installing sliders on reclosable fasteners for plastic bags A device and method for installing sliders onto fasteners for plastic bags includes a rotor having one or more slider pockets for carrying sliders and one or more notch cutting tools for cutting notches in a fastener. A slider is put into a slider pocket ... | 02/11/2003 |
| 6511451 | Method of making and apparatus to make a tampon applicator Tampon applicator for feminine hygiene, comprising a cylindrical applicator barrel of paper-like material, having a front end comprising segments which are bent forwards and inward with respect to the longitudinal center axis of the applicator barrel, for... | 01/28/2003 |
| 6077208 | Stable flexible pouch and method for making the pouch A flexible pouch includes a flexible compartment with a bottom. A rim is formed around the bottom of the compartment and is spaced from and extends outwardly from this compartment bottom. At least three coplanar feet are provided on the rim for stabilizin... | 06/20/2000 |
| 5947884 | Method of producing a bag for carry out food or other articles A carry out bag having a base portion of which opposing two sides are facing each other, first side portions extending from the opposing two sides of the base portion until a middle area of the base portion respectively, and second side portions extending... | 09/07/1999 |
| 5934048 | Seal assembly for easy open pouch A pouch and a method and apparatus for forming an easy open pouch in a form-fill-seal process is disclosed. The apparatus includes a first bar; a means for cutting, housed within the first bar, the means for cutting including a main cutting blade having t... | 08/10/1999 |
| 5857395 | Apparatus for the manufacture of sheets of corrugated board of variable size An apparatus for the manufacture of sheets of corrugated board of variable size comprises a cross cutter for severing the entire web of corrugated board disposed, in the conveying direction of a web of corrugated board, downstream of at least one longitud... | 01/12/1999 |
| 5702339 | Method for making a heavy duty bag having an easy opening spout A plastic, heavy duty bag having an easy opening pouring spout, and a method and apparatus for forming a plastic, heavy duty bag having an easy opening pouring spout are disclosed. The bag includes a radially disposed perforation in the upper corner of th... | 12/30/1997 |
| 5393294 | Method and apparatus for producing sheets of corrugated cardboard with a variable format Method for producing sheets of corrugated cardboard with a variable format in which a web of corrugated cardboard is removed continuously from a heating and pulling device of s conventional corrugated cardboard installation. The sheets are processed to th... | 02/28/1995 |
| 5100371 | Envelope blank forming machine An envelope blank forming machine for forming generally rectangular booklet envelope blanks and generally diagonal envelope blanks on the same machine includes a pair of removable turnbars, adjustable pull rolls and an adjustable cutoff device. Preselecte... | 03/31/1992 |
| 5019030 | Envelope blank forming machine An envelope blank forming machine for forming generally rectangular booklet envelope blanks and generally diagonal envelope blanks on the same machine includes a pair of removable turnbars, adjustable pull rolls and an adjustable cutoff device. Preselecte... | 05/28/1991 |
| 4992128 | Method of making holder for flat objects such as computer disks Holders for flat objects such as computer disks which can provide pages of a book which carries such objects, instruction for their use and etc. Each page is made of a single sheet of foldable material, preferably spunbonded olefin (such material being av... | 02/12/1991 |
| 4979933 | Reclosable bag A reclosable bag having an open end with a side margin adjacent the open end, a metal segment in the side margin having ends extending beyond the opening and a sealing tape overlying the metal strip for encapsulation thereof. Apparatus for manufacturing r... | 12/25/1990 |
| 4861414 | Easy-open flexible pouch and apparatus and method for making same A pouch and a method and apparatus for forming an easy open pouch in a vertical form-fill-seal process wherein a pouch is formed from a sheet of thermoplastic film and a heat seal between pouches as they are filled serves as the top closure for the lower ... | 08/29/1989 |
| 4840611 | Gusseted bags with reclosure features Gusseted bags are provided with extruded reclosable plastic profile strips along free upper end portions of face walls flanking a bag mouth, the fastener strips being free to separate throughout their lengths when opening the bag mouth to the full extent ... | 06/20/1989 |
| 4832677 | Method and apparatus for producing draw tape bags A method and apparatus for forming draw tape bags wherein the bag material moves continuously during the manufacture, except for the last step. The apparatus may be used with an in-line system wherein a tube is extruded and a side gusset is formed to crea... | 05/23/1989 |
| 4820251 | Web notching control apparatus A bag forming apparatus passes a hemmed web through a rotating edge notcher and related units to form a taped hem in the web which is passed through an intermittently operated bag making machine. A web supply unit includes a web take-up unit to maintain a... | 04/11/1989 |
| 4702730 | Method for obtaining a wrapper sheet for a cigarette pack A method for obtaining wrapper sheet blanks from a continuous web having opposite parallel edges, wherein each blank is composed of first and second portions, the first portion having the shape of a rectangle and the second portion having the shape of a n... | 10/27/1987 |
| 4652253 | Method for preparing flat-bottom thermoplastic sack Method and system for preparing a flat-bottom thermoplastic sack including forming a transverse sealed seam across the mid-section of a collapsed, gusseted tube and simultaneously or subsequently forming a preweakened transverse line closely next adjacent... | 03/24/1987 |
| 4573956 | Slitter assembly for double fold bottomer apparatus A slitter mechanism for use in a double fold bottomer apparatus employed in making bags from starting flush cut tubes is described which gives precise, high speed side marginal tube slitting in order to permit subsequent downstream gluing and folding oper... | 03/04/1986 |