Patents Represented by Law Firm Depaoli & O'Brien
  • Patent number: 5356620
    Abstract: In preferred embodiments this invention provides a pharmaceutical composition and a method for the treatment of allergic conjunctivitis or allergic rhinitis. The composition is an aqueous solution containing N-(3,4-dimethoxycinnamoyl)anthranilic acid or a pharmaceutically acceptable salt thereof as an active ingredient. The composition additionally contains as essential components polyvinylpyrrolidone, a basic compound and a surface active agent in prescribed quantities, and the composition has a pH of about 6.5-8.5.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: October 18, 1994
    Assignees: Kissei Pharmaceutical Co. Ltd., Nitten Ophthalmic Research Institute Company
    Inventors: Tokihiko Yamamoto, Taihei Shibazaki, Yukiyoshi Ajisawa, Ryoji Yamamoto, Yukihiko Kinoshita
  • Patent number: 5326929
    Abstract: A continuous process is described for contacting an olefins-containing feed gas stream, which has been freed of CO.sub.2 and sulfur compounds, compressed, cooled, and dried, with a solvent in an intercooled and reboiled demethanizing absorber to produce a rich solvent bottom stream containing ethylene and heavier hydrocarbons and an absorber overhead stream which is fed to a methane absorber which recovers a hydrogen product stream as overhead and produces a rich solvent stream as bottoms. When recovering up to 50% of the incoming hydrogen, this rich solvent stream from the methane absorber is fed to the demethanizing absorber, but when recovering from 20% to 100% of the incoming hydrogen, this rich solvent stream is recycled in part to the demethanizing absorber and in part is fed to a methane stripper which sends its bottoms to the methane absorber and its overhead to an auto refrigerated recovery unit which removes H.sub.2, CH.sub.4, and CO as a fuel gas product and produces an ethylene and heavier stream.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: July 5, 1994
    Assignee: Advanced Extraction Technologies, Inc.
    Inventors: Yuv R. Mehra, Wilfred K. Lam, Dow W. Mullins
  • Patent number: 5314326
    Abstract: In a method of injection-molding a thermoplastic resin wherein a weld is formed in the mold cavity by the fusion of separate resin streams, use is made of a mold provided with a resin well protruding from the molded cavity or a runner on at least one of the separate resin streams at a point between where the injected molten resin is separated into streams and the weld. The resin is poured into the resin well after the formation of the weld from the feed of the molten resin into the mold cavity to cause migration of the resin at the weld, thus forcing the resin on one side of the weld into the resin of the other side of the weld to thereby strengthen the weld.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: May 24, 1994
    Assignee: Polyplastics Co. Ltd.
    Inventors: Yoshihiro Furugohri, Yukihisa Kumagai
  • Patent number: 5314432
    Abstract: This invention provides a stereotactic device which is adapted for placement of a medical probe in the performance of percutaneous lumbar discectomy in a human body. The stereotactic device is utilized in conjunction with a fluoroscope for alignment and placement of a trocar type probe into a herniated disc. Bubble gauges are employed to level the x-axis and y-axis of a trocar support, which orients and slidably guides the medical probe into the targeted herniated disc nucleus.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: May 24, 1994
    Inventor: Kamaljit S. Paul
  • Patent number: 5300362
    Abstract: A coated wire is provided which comprises a wire coated with a blend of polyarylene sulfide and an ungrafted, hydrogenated conjugated diene/vinyl aromatic block copolymer which imparts improved elongation to polyarylene sulfide.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: April 5, 1994
    Assignee: Hoechst Celanese Corporation
    Inventors: Andrew Auerbach, Joseph Tajar, Marvin Wilson
  • Patent number: 5283046
    Abstract: Aqueous co-product, produced by distillation of reaction filtrate from a batch reaction for manufacturing sodium dithionite by reacting sodium formate, sodium hydroxide, and sulfur dioxide in aqueous methanol solution, is rapidly evaporated to remove about 80% of its water content, so that only the determined quantity of water remains with its determined contents of alkali metal compounds, and is utilized as an admixed component of a succeeding batch.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: February 1, 1994
    Assignee: Hoechst Celanese Corporation
    Inventors: Charles E. Winslow, Jr., Joseph L. Bush, Leonard C. Ellis
  • Patent number: 5262461
    Abstract: A polyarylene sulfide resin composition useful for molding articles is obtained by mixing and melt kneading a polyarylene sulfide resin, a polyamide resin, a silane compound and either water or an alcohol having a boiling point of at least 100.degree. C.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: November 16, 1993
    Assignee: Polyplastics Co., Ltd.
    Inventors: Hajime Serizawa, Masaru Kubota, Hiroyuki Sano, Katsumi Uoda
  • Patent number: 5254609
    Abstract: A composition comprising (A) 97 to 20 parts by weight of a polyarylene sulfide resin and (B) 3 to 80 parts by weight of a polyamide resin with (C) 0.1 to 15 parts by weight of a compound having a carbon-carbon double bond and an epoxy group in its molecule and, if necessary, (D) a radical initiator and/or (E) a filler.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: October 19, 1993
    Assignee: Polyplastics Co., Ltd.
    Inventors: Hagime Serizawa, Hiroyuki Sano, Masaru Kubota
  • Patent number: 5252679
    Abstract: A polyarylene sulfide composition comprises (A) 99 to 20 parts by weight of polyarylene sulfide, (B) 1 to 80 parts by weight of a polyamide and (C) 0.01 to 5 parts by weight, based on 100 parts by weight of (A) and (B) in total, of an alkoxysilane. It may further comprise (D) up to 400 parts by weight of a filler in the form of fiber, particles or plates. It can be produced by blending (A), (B), (C) and (D) with one another and melt-kneading the blend for at least 30 seconds while heated.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: October 12, 1993
    Assignee: Polyplastics Co., Ltd.
    Inventors: Hajime Serizawa, Hiroyuki Sano, Masaru Kubota, Katsumi Uota, Toshifumi Nonaka
  • Patent number: 5252656
    Abstract: A polyarlene sulfide resin molding composition suitable for molding and providing a molded article having excellent surface appearance and improved mechanical properties comprises(A) 100 parts by weight of a polyarylene sulfide resin and(B) 5 to 150 parts by weight of "white" mica (muscovite mica).
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: October 12, 1993
    Assignee: Polyplastics Co., Ltd.
    Inventors: Toshifumi Nonaka, Katsutoshi Suzuki
  • Patent number: 5242959
    Abstract: A polyarylene sulfide resin composition having improved adhesion comprises (A) 100 parts by weight of a polyarylene sulfide resin, (B) 0.1 to 15 parts by weight of a compound having a carbon-carbon double bond and an epoxy group in its molecule and, if necessary, (C) a radical initiator and (D) a filler.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: September 7, 1993
    Assignee: Polyplastics Co., Ltd.
    Inventors: Hagime Serizawa, Masaru Kubota
  • Patent number: 5234770
    Abstract: A polyarylene sulfide resin composition comprises (A) 100 parts by weight of a polyarylene sulfide resin and (B) 0.05 to 100 parts by weight of at least one gas-trapping agent selected from zinc carbonate, zinc hydroxide and a complex salt of zinc carbonate and zinc hydroxide. It further comprises up to 400 parts by weight of an inorganic filler other than the gas-trapping agent (B) in way of material, the filler being in the form of fibers, particles and/or plates.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: August 10, 1993
    Assignee: Polyplastics Co., Ltd.
    Inventors: Toshikatsu Nitoh, Kiyokazu Nakamori, Yoshihito Tsukamoto
  • Patent number: 5227427
    Abstract: A polyarylene sulfide resin composition which yields a molded article having excellent surface appearance and excellent toughness and impact resistance comprises a blend of a polyarylene sulfide resin and a polyolefin resin with a compound having a carbon-carbon double bond and an epoxy group in its molecule. Optionally a radical initiator and a filler can be added to the composition.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: July 13, 1993
    Assignee: Polyplastics Co., Ltd.
    Inventors: Hagime Serizawa, Masaru Kubota, Hiroyuki Sano
  • Patent number: 5224350
    Abstract: A subquality nitrogen-rich natural gas stream containing more than 0.1 mol % helium is countercurrently extracted with a lean physical solvent to produce a rich solvent bottoms stream which is flashed twice to produce a methane-rich gas product and a nitrogen-helium product which is fed to at least one membrane unit. A reject nitrogen stream and a crude helium stream are discharged from this unit. The crude helium stream is either compressed to a pressure within the range of 200 to 3,000 psia for sale or is compressed to no more than 1,000 psia and fed to a PSA unit which produces a reject nitrogen stream and a highly purified (99.99+ mol %) helium stream which is compressed to a pressure within the range of 200 to 3,000 psia for sale.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: July 6, 1993
    Assignee: Advanced Extraction Technologies, Inc.
    Inventor: Yuv R. Mehra
  • Patent number: 5225136
    Abstract: In a method of injection-molding a thermoplastic resin wherein a weld is formed in the mold cavity by the fusion of separate resin streams, use is made of a mold provided with a resin well protruding from the molded cavity or a runner on at least one of the separate resin streams at a point between where the injected molten resin is separated into streams and the weld. The resin is poured into the resin well after the formation of the weld from the feed of the molten resin into the mold cavity to cause migration of the resin at the weld, thus forcing the resin on one side of the weld into the resin of the other side of the weld to thereby strengthen the weld.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: July 6, 1993
    Assignee: Polyplastics Co., Ltd.
    Inventors: Yoshihiro Furugohri, Yukihisa Kumagai
  • Patent number: 5223564
    Abstract: A polyarylene sulfide resin composition providing good surface smoothness with excellent surface gloss in a molded product as well as excellent heat resistance, moldability and mechanical properties and which is suitable as the material of construction for automobiles, electric or electronic equipment comprises (A) 100 parts by weight of a polyarylene sulfide resin and (B) 100 to 200 parts by weight of mineral or ceramic fibers having a chemical composition comprising 35 to 50 wt. % of SiO.sub.2, 8 to 20 wt. % of Al.sub.2 O.sub.3, 10 to 40 wt. % of CaO and 3 to 20 wt. % of MgO, represented as oxide.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: June 29, 1993
    Assignee: Polyplastics Co., Ltd.
    Inventor: Mikio Nakio
  • Patent number: 5220097
    Abstract: A continuous process is described for contacting an olefins-containing feed gas stream, freed of CO.sub.2 and sulfur compounds, in a front-end heat-pumped depropanizer to remove the C.sub.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: June 15, 1993
    Assignees: Advanced Extraction Technologies, Inc., Kinetic Technology International Corp.
    Inventors: Wilfred K. Lam, Yuv R. Mehra, Don W. Mullins
  • Patent number: 5218043
    Abstract: The present invention is directed to a polyarylene sulfide resin composition which further contains a polyester resin and has well-balanced properties with respect to toughness, impact resistance and melt viscosity by improving the compatibility of the polyarylene sulfide resin with the polyester resin. The composition comprises a polyarylene sulfide resin, a polyester resin, and 0.1 to 15 parts by weight per 100 parts by weight resin of a compound having in its molecule a carbon-carbon double bond and an epoxy group and, further, including optional ingredients such as a radical initiator and/or filler.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: June 8, 1993
    Assignee: Polyplastics Co., Ltd.
    Inventors: Masaru Kubota, Hajime Serizawa, Hiroyuki Sano
  • Patent number: 5210337
    Abstract: Rhenium has been found to be formaldehyde resistant catalyst and is thus useful in the catalytic hydrogenation of carbonyls, acetals and esters to alcohols when the reaction medium contains formaldehyde as a reactant or impurity. Also, rhenium is a useful catalyst in the hydrogenolysis of acylic acetals to alcohols.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: May 11, 1993
    Assignee: Hoechst Celanese Corporation
    Inventor: Jerry A. Broussard
  • Patent number: 5202481
    Abstract: Acetic acid produced by the low water carbonylation of methanol and containing iodide, unsaturates and carbonyl impurities is purified by treatment with ozone.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: April 13, 1993
    Assignee: Hoechst Celanese Corporation
    Inventors: Mark O. Scates, Russell K. Gibbs, Jr., G. Paull Torrence