Patents Represented by Law Firm Hedman, Gibson, Costigan & Hoare
  • Patent number: 5037889
    Abstract: A resin composition comprising:(i) at least one aromatic carbonate resin;(ii) at least one polyester resin; and(iii) an impact improving effective amount of at least one two-phase interpolymer comprised of at least one cross-linked polyacrylate and at least one cross-linked styrene-acrylonitrile resin.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: August 6, 1991
    Assignee: General Electric Company
    Inventors: Angelika H. McHale, Warren J. Peascoe
  • Patent number: 5037873
    Abstract: There is provided aqueous silane emulsion compositions comprising hydrolyzable silanes, water thickening agents, water and optional buffers, biocides and water beading additives. The compositions are useful in rendering porous masonry substrates water repellent.
    Type: Grant
    Filed: August 8, 1989
    Date of Patent: August 6, 1991
    Assignee: PCR Group, Inc.
    Inventor: Thomas F. Heaton
  • Patent number: 5037617
    Abstract: An apparatus and process for transferring and regulating the recycle of particulate solids separated from a gas-particulate solids suspension in which an auxiliary vessel and slanted pipe are provided to transfer and regulate particulate solids flow.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: August 6, 1991
    Assignee: Stone & Webster Engineering Corporation
    Inventor: Dalip S. Soni
  • Patent number: 5037790
    Abstract: Disclosed is a solid catalyst functionalized with sulfonic groups, containing from 20 to 99% by weight of silica, with the residual percentage being definable by means of the formula:(ZrP.sub.2 O.sub.7).sub.1-x {(Zr(HPO.sub.4).sub.2-y.[O.sub.3 P-R(SO.sub.3 H).sub.n ].sub.y }.sub.xwherein:R is an either linear or branched linear hydrocarbon radical containing from 1 to 10 carbon atoms, or an aryl radical;x is a numeral higher than 0 and of up to 1;y is a numeral higher than 0 and of up to 2;n is either 1 or 2;with said catalyst furthermore showing silicon-oxygen-phosphorus bonds on N.M.R. examination and being amorphous or substantially amorphous when examined under X rays.The catalyst is useful in the acidic catalysis, for example in reactions of hydrocarbon conversion, such as alkylation, isomerization and oligomerization. The product according to the present invention is furthermore useful as an ion exchange agent.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: August 6, 1991
    Assignee: Eniricerche S.p.A.
    Inventors: Mario G. Clerici, Giulio Alberti, Marinella Malentacchi, Giuseppe Bellussi, Aldo Prevedello, Carlo Corno
  • Patent number: 5035252
    Abstract: Nicotine treated dental floss is disclosed which is useful in alleviating tobacco smokers' urges to smoke.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: July 30, 1991
    Inventor: Steven J. Mondre
  • Patent number: 5035732
    Abstract: A cryogenic technique for recovering ethene from a gaseous mixture containing methane, ethane, etc. Operating methods and apparatus are provided for passing the gas feed through a chilling train having a series of dephlegmator-type exchange units to condense liquid rich in ethene and ethane, while separating a major portion of methane and lighter gas. A multizone demethanizer removes condensed methane from the C.sub.2 fraction to provide multiple methane free liquid streams of varying ethene to ethane ratio at least one of which is essentially C.sub.3 free.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: July 30, 1991
    Assignee: Stone & Webster Engineering Corporation
    Inventor: Richard H. McCue, Jr.
  • Patent number: 5035876
    Abstract: A precursor of zirconium dioxide in form of submicronic particles is obtained by:hydrolysing a zirconium alkoxide by bringing said zirconium alkoxide into contact with a microemulsion formed by an external oil phase, an internal aqueous phase, an emulsifier and a co-emulsifier;discontinuing the reaction of hydrolysis in order to control the growth of the particles; andrecovering the precursor of zirconium dioxide from the reaction mixture.Such a precursor can be submitted to treatments of calcination in order to prepare zirconium dioxide for ceramic uses.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: July 30, 1991
    Assignee: Eniricerche S.p.A.
    Inventor: Maurizio Castellano
  • Patent number: 5031363
    Abstract: A hand held device for creating a non-directional finish on a rotating disc, such as a disc brake rotor, comprising a drive roller, attached to a drive shaft, intermediate finishing discs having finishing surfaces thereon and a handle on each side of said roller. The handles have bearings therein on which the drive shaft rotates. The device is also capable of disassembly to replace the finishing surfaces when necessary.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: July 16, 1991
    Inventor: Eugene G. Thiem
  • Patent number: 5031880
    Abstract: A rope traction device used as a winding instrument for a moving scaffold and other construction, loading and unloading and conveying machines includes a sheave which is rotated by a motor through a speed reduction gear and around which a part of a traction rope is wound, and is movable along the rope by rotating the sheave. The sheave is provided with a rope groove formed by a pair of side plates substantially along the entire circumference of the sheave for receiving a part of the rope therein and resiliently pressing the rope on its side portions. In one aspect of the invention, the rope traction device includes an improved brake system according to which slots elongated in the circumferential direction are formed in each clutch member and these slots have a larger width axially in the central portion thereof than in other portions.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: July 16, 1991
    Assignee: Nihon Biso Kabushiki Kaisha
    Inventor: Yutaka Sugiyama
  • Patent number: 5031714
    Abstract: A steering gear ratio changing apparatus includes a first and second steering shafts arranged to be coaxial with each other. The first steering shaft is coupled to a steering wheel of a vehicle and rotatable integral therewith. The second steering shaft is coupled to a steering gear mechanism and arranged to be rotatable. First pawls are formed on one end of the first steering shaft and arranged at equal intervals along the circumferential direction of the shaft. Second pawls are formed on one end of the second steering shaft, which oppose the end of the first steering shaft, and are arranged at equal intervals along the circumferential direction of the shaft. The first and second steering shafts are coupled with each other by a torsion bar and held thereby so that the first and second pawls are engage with one another with a gap between any two adjacent first and second pawls. The width of the gaps is adjusted by actuators so as to cause a relative rotation between the first and second steering shafts.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: July 16, 1991
    Assignees: Mitsubishi Jidosha Kabushiki Kaisha, Mitsubishi Jidosha Engineering Kabushiki Kaisha
    Inventors: Masayoshi Nishimori, Hiroshi Yoshida, Tadao Tanaka, Hiroyuki Masuda
  • Patent number: 5030504
    Abstract: A laminate insulating jacketing material having a layer of poly(vinyl chloride) bonded to a layer of aluminum foil having superior insulation jacketing properties, to be applied over pipe, tank or equipment insulation.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: July 9, 1991
    Assignee: Carol Botsolas
    Inventors: Chris J. Botsolas, Robert E. Mahoney
  • Patent number: 5028526
    Abstract: A method is disclosed for the separation of seminal plasma from semen by means of a membrane. The invention also includes a method for the determination of enzymes such as acrosin and other components of semen.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: July 2, 1991
    Assignee: Alice Deutsch
    Inventor: Alice Deutsch
  • Patent number: 5025836
    Abstract: A rigid or semi-rigid cover for installation over an insulated pipe fitting is provided. The cover is pre-cut in the geometric design that enables it to conform to the shape of the pipe fitting when installed.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: June 25, 1991
    Assignee: Carol Botsolas
    Inventor: Chris J. Botsolas
  • Patent number: 5026751
    Abstract: A cycloaliphatic epoxy compound in combination with a 2-hydroxy-substituted benzophenone compound and a polyalkyl-substituted dipiperidine compound provides a UV stabilizer that exhibits synergistic behavior. The compounds can be formulated into a composition that is coated on, or impregnated into, the surface of a plastic article or, alternatively, they can be incorporated into a thermoplastic composition which can be thereafter molded into a shaped article. The stabilizer combination succeeds in upgrading the resistance of polyphenylene ether resins and blends against the photo-deteriorative effects of sunlight and bright indoor light, for example, fluorescent lighting.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: June 25, 1991
    Assignee: General Electric Company
    Inventor: Richard C. Bopp
  • Patent number: 5026866
    Abstract: The present invention relates to a new method of synthesis of 2,2'-bis.DELTA..sup.2 -oxazoline, which consists of three steps:in the first step,N,N'-bis-(2-hydroxyethyl)-oxamide (I) is reacted with hydrogen chloride and a nitrile of formula RCN in which R.dbd.H, alkyl, aryl, arylalkyl, alkylaryl, in order to yield the correspondingN,N'-bis-(2-iminoacyloxyethyl)oxamide.2HCl (II).In the second step, the compound (II) is pyrolyzed in order to yieldN,N'-bis-(2-chloroethyl)oxamide (III) which in the third step generates, by means of the treatment with a base, the desired product 2,2'-bis-.DELTA..sup.2 -oxazoline.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: June 25, 1991
    Assignee: Enichem Anic S.p.A.
    Inventors: Giuseppe Messina, Loreno Lorenzoni, Giovanna Chessa
  • Patent number: 5024189
    Abstract: An engine unit includes a cylinder block of a short-skirt type which has a plurality of first partition walls and a plurality of crank journals formed on the partition walls and rotatably receiving the crankshaft. Bearing caps are fitted to the crank journals and rotatably hold the crankshaft in cooperation with the crank journals. A lower case is fixed to the cylinder block and covers the crankshaft. The lower case includes a pair of flanges abutting against the lower edges of the skirt portions, a semi-cylindrical bottom wall, and a plurality of second partition walls formed on the bottom wall to oppose the first partition walls. Each bearing cap is clamped between the first and second partition walls. The lower case is fixed to the cylinder block by means of first bolts screwed into the skirt portions through the flanges, and second bolts screwed into the crank journals through the second partition walls and bearing caps.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: June 18, 1991
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Sadakatsu Ushio, Noboru Nakamura, Hirofumi Higashi, Masataka Iwata, Fumiyasu Niwa
  • Patent number: 5025066
    Abstract: Polycarbonate and polyester blends are prepared with a combination of modifiers comprising a multi-stage polyorganosiloxane-based graft polymer composition and a diene rubber-based graft polymer composition imparting a wide range of excellent physical properties on the PC and PE blends.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: June 18, 1991
    Assignee: General Electric Company
    Inventors: James L. DeRudder, I-Chung W. Wang
  • Patent number: 5024249
    Abstract: A one piece pipefitting cover for insulated Y-shaped joints, including strainers or lateral 45.degree.-Y fittings, made of a flexible material, i.e., polyvinyl chloride, comprising a relatively flat base symmetrical about its center axis having oppositely facing lateral members and semi-circular edge members along its sides wherein when rotated about its center axis forms a cover conforming to the shape of the insulated fitting.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: June 18, 1991
    Assignee: Carol Botsolas
    Inventor: Christos J. Botsolas
  • Patent number: D317547
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: June 18, 1991
    Assignee: Fratelli Guzzini, S.p.A.
    Inventor: Bruno Gecchelin
  • Patent number: D318339
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: July 16, 1991
    Assignee: Iguzzini Illuminazione S.p.A.
    Inventor: Bruno Gecchelin