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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 4009234 | Method for high speed sinter molding A method for high speed sinter molding having endless chains mounted side by side. Mold halves are attached at spaced intervals down the chains. The paired mold halves come next to each other to form a female mold into which is deposited a polymeric mater... | 02/22/1977 |
| 4003758 | Battery separator with porous body and fused rib Battery separators with degradation resistant rib areas are produced from nonwoven mats of thermoplastic fibers by substantially fusing the fibers in raised regions of the mat. The fusion is progressively lessened toward the base of the rib. The rib is fo... | 01/18/1977 |
| 4001360 | Method for preparing pulverulent polymers exhibiting an apparent increase in glass transition temperature and shaping the resultant polymer materials Polymeric bodies having selected morphological properties are prepared by effecting an apparent increase in the glass transition temperature of the polymer to cause it to become glassy and manipulating the polymer while it is in the glassy state. In the p... | 01/04/1977 |
| 3997644 | Method for manufacturing novel cation exchangers A cation exchanger in paper-like or felt-like form is obtained by making a fibrous sheet from a blend of polyethylene fibers into which sulfonic groups have been introduced with 0.1 to 50% by weight of thermoplastic resin fibers and heating the sheet at t... | 12/14/1976 |
| 3994759 | Needled nonwoven material and method for making same Heat shrinkable fibers are laid down on a backing element, needle-punched and thereafter heated on one surface of the needle-punched fabric in a relaxed condition to a temperature to fuse at least a portion of the fibers adjacent the heated surface and sh... | 11/30/1976 |
| 3992501 | Process for the manufacture of void-free polyolefin foam moldings Foam moldings of olefin polymers are prepared by heating, and pressing together, foamed particles of an olefin polymer, containing crosslinked constituents, in molds, a temperature gradient of from 0.5° to 25° C per cm of loose mass of particles being e... | 11/16/1976 |
| 3989787 | Method of rotational molding a thermosetting article with a thermoplastic insert Method of making a molded article comprising a hollow body of a crosslinked polymer rotationally molded around a section of at least one piece of non-crosslinked conduit, which conduits protrude from said hollow body, made by attaching said conduits of no... | 11/02/1976 |
| 3989788 | Method of making a bonded non-woven web Process for continuous bonding of a fibrous non-woven web of polyethylene terephthalate matrix and copolyester binder filaments which comprises depositing the matrix and binder filaments as a nonwoven web on a moving belt, steam treating the nonwoven web ... | 11/02/1976 |
| 3988524 | Powder metallurgy compacts and products of high performance alloys A powder metallurgy compact and a sintered product is provided from high performance alloys difficult to compact and/or sinter. The green compact comprises a mixture of the alloy powder, which, as a result of blending and extruding is coated with a film o... | 10/26/1976 |
| 3987137 | Method of making a direct inking platen A method of making an inking platen suitable for use with impact printers and comprising a unitary microporous nylon body having a thin microporous flexible tough outer skin portion, and a ribbon affixed to the skin; the ribbon being woven of nylon fibers... | 10/19/1976 |
| 3986546 | Method of making a foundry mold or core with an anaerobically cured adhesive Solid particulate materials are bonded together to form a foundry mold or core by I. forming a mixture of the particles and an anaerobically-curing adhesive and moulding the mixture to the desired shape, and Ii. causing the adhesive to cure and bond the partic... | 10/19/1976 |
| 3976821 | Rotationally molding a multilayered article A hollow multilayered article is rotationally molded by introducing into the mold particles of a hompolymer or copolymer of ethylene containing a crosslinking agent and heating the mold during rotation thereof to melt this first polymeric layer. Solid par... | 08/24/1976 |
| 3975481 | Method for molding ultra-high molecular weight polyethylene molding powder A method for molding powder of ultra-high molecular weight, linear polyethylene comprising particles of less than 100 micron mean particle size having narrow particle size distribution is free-sinterable to form solid articles by a process comprising (a) ... | 08/17/1976 |
| 3975480 | Method of making ornamental plastic articles An ornamental plastic article having a smooth rear exterior surface and a rough, randomly arranged layer of plastic particles or pellets forming the front outer surface is produced by placing a layer of plastic powder on one surface of a first mold form c... | 08/17/1976 |
| 3974250 | Method for reducing crystalline orientation of para-oxybenzoyl polyesters Polyesters of para-oxybenzoyl are infusible and very resistant to acids and solvents, thus limiting the means by which such polymers can be fabricated. Such a polyester is made more amorphous, thus improving compression moldability, by subjecting it to a ... | 08/10/1976 |
| 3971839 | Particle filled self-conformable cushion and method of making same A quantity of discrete particles of thermo-meltable material are heated to melt those particles at the surface of the charge for a predetermined distance inwardly of the charge. The particles remote from the surface of the charge remain in original and un... | 07/27/1976 |
| 3970736 | Method of manufacturing hollow elements from thermoplastic materials A method of moulding a drum or similar from a thermoplastic resin in powdered form, in which an appropriately shaped mould, after introduction of the thermoplastic material, is subjected to the actions of alternate direction rotation, tilting, heating and... | 07/20/1976 |
| 3968308 | Process for the manufacture of chip boards using condensation resins as binders and product The present invention relates to a process for the manufacture of chip boards especially multi-layer chip boards, using condensation resins as binders, and the products thereof the improvement including wetting powdered adhesive particles before applying ... | 07/06/1976 |
| 3965236 | Poly(meta-phenylene isophthalamide) powder and process A poly(meta-phenylene isophthalamide) powder is provided which is coalescible under the influence of pressure followed by heating at temperatures below its crystalline melting point to provide molded objects of a solid and homogeneous nature. A process fo... | 06/22/1976 |
| 3962390 | Method of producing composite foamed shaped articles from thermoplastic resins A method of producing shaped articles of thermoplastic resin having a non-foam layer and foam layer, which comprises introducing into a mold thermoplastic resin particles not containing a heat-decomposable blowing agent and thermoplastic resin particles c... | 06/08/1976 |
| 3954932 | Poly(phenylene sulfide) containing mixtures and processes for producing free sintered parts therefrom A process for free sintering parts made from mixtures of poly(phenylene sulfide) and at least one selected filler by subjecting molded parts to gradually increasing temperatures and then curing at an elevated temperature. Precured poly(phenylene sulfide) ... | 05/04/1976 |
| 3953564 | Process for forming decorative surface coverings A process for producing a decorative surface covering wherein granular dryblend is deposited on a releasable carrier and heated to form a porous cohesive layer. Settable resinous inks are then applied to selected surface portions of the dryblend to form d... | 04/27/1976 |
| 3948865 | Chemical treatment of arylene sulfide polymers The properties of arylene sulfide polymers are improved by treating the polymer with a fluid treating agent selected from the group consisting of hydrogen peroxide, an alkali metal or alkaline earth metal hypochlorite, sulfuric acid, chlorine, sulfuryl ch... | 04/06/1976 |
| 3943212 | Method for sinter molding plastic articles Molding is performed by directing streams of comminuted plastic material against surfaces of a heated form or mold, while repeatedly sweeping the form or mold across the streams, progressively depositing the material in one or more predetermined zones, so... | 03/09/1976 |
| 3941636 | Process for forming decorative surface coverings A process for producing a decorative surface covering wherein granular dryblend is deposited on a releasable carrier and heated to form a porous cohesive layer. Settable resinous inks are then applied to selected areas of the dryblend to form a design whi... | 03/02/1976 |
| 3933546 | Method for draining water or moisture from substratum for waterproofing layer A method for draining water or moisture from a substratum for a waterproofing layer in buildings comprising applying to the substratum such as concrete or mortar a sintered product of a thermoplastic resin, having a capillary structure comprising numeral,... | 01/20/1976 |
