Patents Examined by P. C. Ives
  • Patent number: 5071691
    Abstract: A polymorph of a phthalocyanine, designated M-phthalocyanine or M-metal phthalocyanine, has spectroscopic properties different from those of any of known crystalline polymorphs of phthalocyanine, the polymorph having been prepared in an environment of at most 0.1 G. In a further aspect, a process is disclosed for preparing novel organic films comprising a closed chamber physical vapor transport (PVT) in a low gravity environment.Films of novel polymorphs have a surface roughness factor in the range of greater than 1.000000 and less than 1.000010, a density of at least 50 percent increase over anypolymorph of the same molecules produced in unit gravity, and in which at least 50 weight percent of the molecules of said film have a common uniaxial orientation.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: December 10, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Mark K. Debe
  • Patent number: 5032456
    Abstract: Synthetic microcellular paintbrush bristles are produced having a generally consistent cross-sectional shape along their length and a rough and irregular surface. The bristles comprise 15 to 40% cells on a volume basis, the cells being predominantly closed in the interior of the bristle and being open along the wall to provide the rough and irregular surface.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: July 16, 1991
    Assignee: Newell Operating Company
    Inventors: Timothy D. O'Brien, William M. Wagner
  • Patent number: 5009948
    Abstract: A polymorph of a phthalocyanine, designated M-phthalocyanine or M-metal phthalocyanine, has spectroscopic properties different from those of any of known crystalline polymorphs of phthalocyanine, the polymorph having been prepared in an environment of at most 0.1 G. In a further aspect, a process is disclosed for preparing novel organic films comprising a closed chamber physical vapor transport (PVT) in a low gravity environment.Films of novel polymorphs have a surface roughness factor in the range of greater than 1.000000 and less than 1.000010, a density of at least 50 percent increase over any polymorph of the same molecules produced in unit gravity, and in which at least 50 weight percent of the molecules of said film have a common uniaxial orientation.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: April 23, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Mark K. Debe
  • Patent number: 4966795
    Abstract: Sheet structures wherein the composition of one layer comprises a first component of a polypropylene, a second component of an ethylene-based copolymer, and a third component which provides some properties representative of elastomeric polymers. The invention further contemplates packages made from the sheet structures incorporating the recited compositions.
    Type: Grant
    Filed: May 5, 1988
    Date of Patent: October 30, 1990
    Assignee: American National Can Company
    Inventors: Roger P. Genske, Yong J. Kim
  • Patent number: 4966809
    Abstract: Disclosed is a water-absorbing composite body comprising a tape-shaped laminate having at least one layer of a high-melting-point synthetic resin and at least one layer of a low-melting-point synthetic resin, in which at least a part of the low-melting-point synthetic resin layer is exposed to the surface, a split fiber obtained by splitting this tape-shaped laminate or a composite fibrous body having a laminate structure as described above, and a powdery polymeric water absorber fusion-bonded to the outer surface of the low-melting-point synthetic resin layer exposed to the surface. This water-absorbing composite body has a high water-absorbing capacity and retains a good mechanical strength.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: October 30, 1990
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Toyoaki Tanaka, Katuzi Ohira, Akira Nakamura, Ryosuke Kamei, Akihiro Hashimoto
  • Patent number: 4952451
    Abstract: A multi-layered thermoplastic polyolefin film having an improved combination of physical characteristics is disclosed. In particular, the multi-layered film evidences an improved combination of elongation, oxygen transmission and heat shrinkability. Preferred five layer embodiments of the film comprises (1) a core layer of either a low density polyethylene homopolymer or an ethylene acetate copolymer or a blend of an ethylene vinyl acetate copolymer with a linear low density polyethylene; (2) two adjacent intermediate layers of a very low density polyethylene with a density of less than 0.900 gms/ccm, and (3) two surface layers of an ethylene vinyl acetate copolymer.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: August 28, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Walter B. Mueller
  • Patent number: 4950513
    Abstract: A laminar article with good barrier properties to oxygenated and hydrocarbon compounds is prepared by blending a polyolefin with about 2 to 39% of a melt blend of a nylon and a polyvinyl alcohol component, using an alkylcarboxyl-substituted polyolefin as a compatibilizer.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: August 21, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Vinod K. Mehra
  • Patent number: 4948657
    Abstract: A multi-layer shrink film obtained by forming an assembly which comprises an interlayer comprising a flexible propylene resin having a Vicat softening point of 115.degree. C. or less and/or a linear very low-density polyethylene having a density less than 0.91 g/cm.sup.3 sandwiched between outermost layers comprising a propylene resin having a Vicat softening point higher than that of the flexible propylene resin of interlayer and within the range of 80.degree.-150.degree. C. followed by stretching said assembly is disclosed. The film obtained according to the present invention is well suited for a multi-layer shring packaging film and the like.
    Type: Grant
    Filed: February 25, 1988
    Date of Patent: August 14, 1990
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tadatoshi Ogawa, Teruaki Yoshida
  • Patent number: 4948666
    Abstract: The present invention is related to a stain resistant polycarbonate panel which preferably comprises co-extruded polycarbonate sheet and an adherent layer based on linear polycarbonate resin which contains an additive conforming to ##STR1## wherein R.sup.1 and R.sup.2 independent of each other are a hydrogen or a halogen atom, a C.sub.1 -C.sub.12 alkoxy, C.sub.7 -C.sub.18 arylalkoxy or a C.sub.1 -C.sub.10 alkyl, cycloalkyl, arylalkyl or an aryl radical and R.sup.3 and R.sup.4 independent of each other are a hydrogen atom, a C.sub.1 -C.sub.10 alkyl, cycloalkyl, arylalkyl or an aryl radical, n is an integer of 0-4 and m is an integer of 1 to 3, --Bridge-- is either ##STR2## where p is 0-3, q is 1-10, Y denotes any of ##STR3## and R.sup.3 and R.sup.4 independently denote a hydrogen atom a C.sub.1 -C.sub.10 alkyl, cycloalkyl, arylalkyl or an aryl radical characterized in that said adherent layer is about 5 to 100 microns in thickness and in that only one of its surfaces is bonded.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: August 14, 1990
    Assignee: Mobay Corporation
    Inventors: Winfried G. Paul, Sivaram Krishnan, Larry D. Sarver
  • Patent number: 4946744
    Abstract: A substrate coated with a multi-layer decorative and/or protective coating which comprises:(a) a basecoat comprising a pigmented film-forming polymer; and(b) a transparent clearcoat comprising a film-forming polymer applied to the surface of the basecoat composition;the improvement which comprises utilizing as the clearcoat a multicomponent curable composition which is reactive upon mixing of the components, wherein the curable composition comprises:(i) an anhydride-functional compound having an average of at least two cyclic carboxylic acid anhydride groups per molecule; and(ii) a hydroxy-functional compound havng an average of at least two hydroxyl groups per molecule;wherein at least one of the compounds (i) or (ii) comprises a film forming polymer.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: August 7, 1990
    Assignee: The Sherwin-Williams Company
    Inventors: Mohamad D. Shalati, James A. Marquart, John R. Babjak, Rodney M. Harris
  • Patent number: 4946372
    Abstract: A composite paper is provided which is comprised of a paper substrate, a continuous thermoplastic film formed on at least one surface of the paper substrate, and a layer of an ink absorbent composite bonded to the outer surface of the thermoplastic film. The composite paper of this invention is especially useful as a printing substrate and in the manufacture of packages requiring printed surfaces.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: August 7, 1990
    Assignee: Union Camp Corporation
    Inventor: Eitan Avni
  • Patent number: 4945002
    Abstract: An impact-resisting anti-lacerative window glass unit of laminate of a sandwich structure is disclosed, which comprises two exterior plate-like member made of a transparent organic polymer (A) and a transparent organic polymer (B) or a transparent inorganic material, respectively, and multilayer structure intermediate films made of at least two kinds of polymers (C). The multilayer structure intermediate films are interposed between two exterior plate-like members.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: July 31, 1990
    Assignee: Bridgestone Corporation
    Inventors: Itsuo Tanuma, Hideo Takeichi, Masashi Segawa, Toshio Honda
  • Patent number: 4944997
    Abstract: A coated paper for use in electrostatogrpahic processes for receiving a toner image formed by a liquid developer comprises a substrate having bound thereto on at least one side generally smooth surface, spherical, bearing spacer particles having a particle size of from about 5 to about 15 micrometers.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: July 31, 1990
    Assignee: Xerox Corporation
    Inventor: Norman A. Nielsen
  • Patent number: 4940854
    Abstract: A layered structure comprises in sequence a substrate, and coated on at least a portion of at least one surface of said substrate a first layer comprising a crystalline uniaxially oriented organic compound, and at least one additional layer comprising a crystalline uniaxially oriented organic compound which is epitaxially vapor deposited on said first layer.A method for providing the layered structure of the invention comprises the steps of(a) providing a substrate,(b) depositing and crystallographically uniaxially orienting a first organic (seed) layer onto the substrate,(c) depositing from the vapor phase at least one additional organic layer onto the oriented seed layer to provide a layered structure wherein the at least one additional layer is epitaxial with the seed layer.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: July 10, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Mark K. Debe
  • Patent number: 4940628
    Abstract: An erasable system including a marking element providing a substantially non-porous marking surface and an erasable marking composition for applying markings to the marking surface. The erasable marking composition comprises a dispersion of a particulate film-forming polymeric material and a colorant and preferably also include a water soluble polymer.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: July 10, 1990
    Assignee: The Gillette Company
    Inventors: Nan J. Lin, Peter G. Hanley
  • Patent number: 4939008
    Abstract: A composite film having strong interlayer bond strengths is disclosed. An aziridine-functional layer is employed to bond a top polyolefin layer to a polymeric bottom layer.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: July 3, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Michael B. Kemski
  • Patent number: 4938998
    Abstract: A plastic article, especially of polypropylene or polyethylene, can be rendered resistant to diffusion of motor fuel vapors or the like and/or prepared for surface-coating by applying a film of a naturally-occurring, enzymatically-functionalized cellulose derivative having a functional phosphate, sulfate, carbonate or amino group.
    Type: Grant
    Filed: August 20, 1986
    Date of Patent: July 3, 1990
    Inventor: Juergen Stock
  • Patent number: 4937112
    Abstract: A multilayer hot blown film useful in chub packaging comprises a first outer layer of a heat-sealable polymeric material; a first interior layer of a high molecular weight polymeric material; a second interior layer of a polyamide; and a second outer layer of a self-weldable polymeric material.
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: June 26, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Henry G. Schirmer
  • Patent number: 4937141
    Abstract: A synthetic bristle for brushes, including particularly paint brushes, which has attributes of natural bristle, such as the hair of swine, including an irregular surface texture which holds paint and is easy to clean, while retaining desirable characteristics of synthetic bristles such as good water and abrasion resistance, said bristle being formed preferably from a synthesized polymer, a co-polymer, or an alloy or mixture of synthetic polymers.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: June 26, 1990
    Assignee: Newell Operating Company
    Inventor: Fredrick B. Burns
  • Patent number: 4937145
    Abstract: A three layer structural sheet material having improved resistance to delamination comprising a core layer of a composite paper having outer surface layers of thermoplastic resin adhered to both major surfaces thereof.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: June 26, 1990
    Assignee: The Dow Chemical Company
    Inventor: Kent B. McReynolds