Patents Examined by Thomas Wallen
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Patent number: 4212299Abstract: A container bag for use in preserving blood or its component materials in liquid nitrogen. The container bag has excellent physical properties especially in quite low temperature conditions and is composed of: an inner layer made of ethylene-tetrafluoroethylene copolymer and an outer layer made of one member selected from the group consisting of polyethylene phthalate, polyethylene naphthalate, cross-linked polyethylene, perfluoroalkoxy resin, polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer and aromatic polyimide.Type: GrantFiled: June 2, 1978Date of Patent: July 15, 1980Assignee: Toppan Printing Co., Ltd.Inventors: Shyoji Yokokoji, Kazuhisa Hoshino
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Patent number: 4210157Abstract: Disclosed is a smokable tobacco product comprised of a tobacco portion consisting essentially of tobacco particles having a mean ratio of area to perimeter squared of at least about 0.049 and a short dimension not in excess of 0.5 inch wherein the particles are of a substantially normal particle size distribution. By forming a smokable tobacco product of such particles, the lattice structure is highly resilient, enabling product formation at lower than normal weights while retaining similar firmness, end stability and burn properties as conventional cigarettes.Type: GrantFiled: January 16, 1978Date of Patent: July 1, 1980Assignee: Brown & Williamson Tobacco CorporationInventors: Earl E. Kohnhorst, Thomas W. Summers, David L. Gordon
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Patent number: 4209026Abstract: This invention relates to a containment member matably assembled within a substantially cylindrical housing having therewithin a mass of filtering material such as water-reactive, expansible fibrous material and at least one frangible body having a liquid content, both of said containment member and said housing being made of resilient, impervious materials of the type generally designated as plastics, and each having one end open and at the opposite end an integral disc having multiple perforations for the passage of smoke therethrough.Type: GrantFiled: December 2, 1977Date of Patent: June 24, 1980Inventor: Mortimer R. Dock
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Patent number: 4205399Abstract: Synthetic filaments composed of homopolymers and copolymers of poly(alkylene oxalates) are absorbable in animal tissue with minimal adverse tissue reaction. Polymers prepared by reacting a dialkyl oxalate with an alkylene diol are melt spun and drawn to obtain oriented fibers having good tensile properties and a high level of flexibility and softness. The filaments are particularly useful in the preparation of surgical prosthesis comprising woven or knitted fabrics and meshes. Other absorbable surgical devices including films and molded items may also be prepared from the disclosed polymer.Type: GrantFiled: May 26, 1978Date of Patent: June 3, 1980Assignee: Ethicon, Inc.Inventors: Shalaby W. Shalaby, Dennis D. Jamiolkowski
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Patent number: 4200097Abstract: A disposable douche for dispensing fluids contained therein including a collapsible container, a sealing closure, a nozzle assembly having a passageway communicating with the interior of the container for dispensing the contents of the container, a portion of the nozzle being retractable into the interior of the container to a storage position and being extendable to a use position, seals between the nozzle and the closure and between the closure and the container for preventing leakage from the container, a sleeve valve mounted on the nozzle for controlling the flow of fluids from the container through the nozzle, abutments on the closure and sleeve valve for opening the sleeve valve when the nozzle is extended from the retracted to the use position.Type: GrantFiled: August 4, 1978Date of Patent: April 29, 1980Assignee: C. B. Fleet Company IncorporatedInventors: Thomas G. Hobbs, Jr., Eugene A. Stephens
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Patent number: 4198983Abstract: A catheter, preferably a balloon-type catheter, is disclosed in which the catheter shaft is made of a thermoplastic material and thus may be extrudable, the shaft consisting essentially of (a) from 40 to 70 percent by weight of an elastic composition which comprises: from 50 to 99.5 percent by weight of a block copolymer having thermoplastic rubber characteristics with a central, rubbery polyolefin block and terminal blocks of polystyrene, and optionally including up to about 45 percent by weight of polypropylene, plus from 0.5 to 10 percent by weight of a cross-linked organic silicone elastomer; and (b) from 30 to 60 percent by weight of a hydrophobic oil-type plasticizer to provide the desired degree of softness to said elastic composition.Type: GrantFiled: April 28, 1978Date of Patent: April 22, 1980Assignee: Baxter Travenol Laboratories, Inc.Inventors: Lawrence F. Becker, Henry M. Gajewski
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Patent number: 4196728Abstract: A breath warming apparatus which comprises a flexible, lightweight casing in the shape of a curved, generally symmetrical horn of expanding cross section, having a flared internal chamber containing metal mesh. This mesh will retain the heat and expired moisture of the wearer and will in turn warm and humidify the air being inhaled through the device. A mouthpiece, designed to minimize resistance to airflow to and from the oral cavity, provides the immediate aperture through which the user breathes when using the apparatus. Relatively large exit ports allow for high volume transfer of air.Type: GrantFiled: September 1, 1978Date of Patent: April 8, 1980Inventor: Alfred D. Granite
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Patent number: 4188943Abstract: A method of producing a dismountable web reinforced plaster cast for supporting an interior mold, comprising covering the mold with an elastic stocking, covering said stocking with a rubber layer in the form of thin latex rubber strips, treated with talcum, by winding said strips around said stocking, placing at least two longitudinally extending border lists each with an inserted wire along the highest contours of the mold by means of self-adhesive tape which adheres to the underlying rubber winding applying plaster reinforced with fabric around said rubber winding and said border lists, allowing the plaster to solidify, cutting the plaster along chords at the lists using said wires as guides for the cutting tool so that the latter does not cut too deeply into the plaster, removing the resulting plaster segments, separating the remaining parts of plaster from the mold, drying said parts in an oven so that the excess water is removed, restoring said parts with intermediate border lists around the mold, and fiType: GrantFiled: September 20, 1977Date of Patent: February 19, 1980Inventor: Gunnar Sjostrand
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Patent number: 4187852Abstract: An insoluble cross-linked polypentapeptide is totally synthesized by preparing two modified linear polypentapeptides patterned on the polypentapeptide from the pentapeptide (Val.sub.1 -Pro.sub.2 -Gly.sub.3 -Val.sub.4 -Gly.sub.5) one of the repeating peptide sequences contained in tropoelastin, the precursor protein of the core of the elastic fiber of the vascular wall, and by cross-linking the modified polypentapeptides. One of the intermediate polypentapeptides is modified by replacing a portion of at least one of the amino acid residues with the residue of an amino acid having more than one amino function and the other is modified by replacing a portion of at least one of the amino acid residues with the residue of an amino acid having more than one carboxyl function, to provide free amino groups on the one intermediate and free carboxyl groups on the other for interreaction in the presence of a suitable cross-linking agent.Type: GrantFiled: August 14, 1978Date of Patent: February 12, 1980Assignee: The University of AlabamaInventors: Dan W. Urry, Kouji Okamoto
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Patent number: 4186743Abstract: A sanitary napkin is provided having a pressure-sensitive adhesive element on the surface thereof for adhering to the crotch portion of the undergarment. The adhesive element is further provided with a protective releasable layer having adhered thereto microcapsules containing a deodorant material. Upon peeling the protective releasable layer from the adhesive element, the deodorant material is released in a controlled manner.Type: GrantFiled: February 28, 1978Date of Patent: February 5, 1980Assignee: Personal Products CompanyInventor: Fred H. Steiger
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Patent number: 4185629Abstract: The blood processing method, and the apparatus for performing the steps of the method are utilized in separating whole blood into its components and include the steps of, or component parts of the apparatus for carrying out these steps of: pumping whole blood from a donor; passing the whole blood through a first chamber in a centrifuge device: centrifuging the whole blood in the centrifuge device to cause sedimentation of red blood cells from the whole blood in, and separation of platelet rich plasma from the whole blood in, the first chamber; pumping the separated platelet rich plasma from the first chamber and out of the centrifuge device where it is monitored and then back into the centrifuge device and through a second chamber in the centrifuge device where the platelet rich plasma is centrifuged to cause sedimentation of the platelets therein while passing the remaining blood fluid though the first chamber and back to the donor; recombining the plasma passed through the second chamber with the blood fluiType: GrantFiled: October 18, 1977Date of Patent: January 29, 1980Assignee: Baxter Travenol Laboratories, Inc.Inventors: Herbert M. Cullis, James H. DeVries, David A. Lohr, Rodolfo R. Rodriquez, Michael B. Uffer
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Patent number: 4177811Abstract: A cleansing and applicator device is disclosed, which is especially useful in treatment of the perineal area of the human anatomy. The device comprises a generally conically shaped applicator body, formed preferably of a good heat conductor, the device being hollow and closed at the base thereof by a removable cap, whereby a cooling or heating liquid may be provided to the body interior. A flexible and compressible covering structure for effecting cleansing and treatment is fitted about and thereby encloses at least the portion of the applicator body including the apex. The covering structure preferably includes multiple layers, including at least one moisture-absorbent layer. The applicator body may include a necked-in portion toward the base thereof, so that the covering structure can be frictionally secured to the body, such as with an elastic band or a clamp.Type: GrantFiled: September 14, 1977Date of Patent: December 11, 1979Inventor: Marcial Alvarez
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Patent number: 4163452Abstract: An improved tobacco-smoke filter or filter material contains granules of porous activated carbon to which has been applied a nitroxide of the group consisting of the nitroxide 4-oxo-2,2,6,6-tetramethylpiperidino-oxy, the nitroxide 1-nitronyl-3-oxyl-4,4,5,5-tetramethyl-2-phenyldihydroimidazole and mixtures thereof. The carbon may be loaded with 0.5 to 25%, suitably 1.0 to 15%, by weight of the nitroxide. Advantageously such a filter has provision for filter ventilation. For instance, in a triple filter with a center section containing the treated carbon, the said center section and/or the section upstream thereof is ventilated.Type: GrantFiled: December 1, 1977Date of Patent: August 7, 1979Assignee: British-American Tobacco Company LimitedInventors: John D. Green, Ian R. Harris