Patents Represented by Attorney Joshua J. Ward
  • Patent number: 5755962
    Abstract: A prefilter bag for insertion into a standard filtration bag apparatus, having a filtration assembly comprising a seamless filter membrane having uniform pore openings preselected within the range of between about 2 and about 50 microns (.mu.) and a linearly channeled, non-deformable, semi-rigid liquid transport thermoplastic sheet in the form of a molded webbing or netting in contact with the upper surface of the filter membrane; said webbing having marginal edges which are coextensive with those of the membrane; said assembly adapted to be shaped by continuous winding of the assembly upon itself for 2 to 5 complete convolutions around a tubular mandrel so as to form a cylindrical tube or cone; the bottom of said cylinder being sealed to prevent liquid leakage and the top of said cylinder, forming a liquid inlet opening, being sealed to a retaining ring adapted to be inserted in, attached to or sealed to an outer, retaining ring of a non-wrapped filter bag.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: May 26, 1998
    Assignee: ISP Investments Inc.
    Inventors: Moshe Gershenson, Robert S. Elliott, John Pearson, Edward G. Malawer
  • Patent number: 5739183
    Abstract: A method of stabilizing an aqueous solution of an acid copolymer of maleic acid and a C.sub.1 -C.sub.5 alkyl vinyl ether against degradation in viscosity or molecular weight upon storage for an extended period of time in aqueous solution at ambient conditions, with a single stabilizing agent, which comprises forming the acid copolymer directly from a slurry of corresponding anhydride in an organic solvent by hydrolysis in water, and adding including ethylenediamine tetraacetic acid (EDTA), or salt thereof, as the single stabilizing agent to the solution either before or after hydrolysis.
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: April 14, 1998
    Assignee: ISP Investments Inc.
    Inventors: Chi-San Wu, James Curry, James P. Cullen, John S. Mc Ewan
  • Patent number: 5734006
    Abstract: This invention relates to a coprecipitated binder composition used for the compression of pharmaceutically and agriculturally active components to provide a non-friable pill or tablet of increased hardness with remarkably improved rate of dissolution and improved stability in aqueous solution. The invention also relates to the process for preparing the binder and to its incorporation in a formulation with the active ingredient.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: March 31, 1998
    Assignee: ISP Investments Inc.
    Inventor: Kolazi S. Narayanan
  • Patent number: 5731112
    Abstract: This invention relates to a mixture of imageable polyacetylenic compounds which have similar photosensitivities and which are visually imageable in complementary colors combinable to provide a black image, which mixture contains at least one polyacetylenic metal salt which produces a color, preferably a metal salt of a diacetylene C.sub.6 to C.sub.48 mono- or dicarboxylic acid, which is complementary to a color produced by another polyacetylenic metal salt or non-metallic polyacetylenic compound contained in the mixture or in an another integral color forming layer. The invention also pertains to the use of said mixture and the manner of its preparation.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: March 24, 1998
    Assignee: ISP Investments Inc.
    Inventors: David F. Lewis, Sangya S. Varma
  • Patent number: 5731450
    Abstract: This invention relates to the synthesis of vegetable and synthetic oil adducts and to the adduct products having the formula ##STR1##
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: March 24, 1998
    Assignee: ISP Van Dyk Inc.
    Inventors: Anatoly Alexander, Ratan K. Chaudhuri
  • Patent number: 5731264
    Abstract: A stabilized liquid emulsifiable concentrate for an active sulfonyl or sulfamoylurea herbicide is described. The liquid delivery system in the concentrate includes a polar solvent capable of dissolving the active herbicide, and which does not promote proton exchange between the active and solvent, suitably gamma-butyrolactone, propylene glycol, acetonitrile, or propylene carbonate; optionally with a hydrophobic solvent; and a mixture of anionic and non-ionic surfactants.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: March 24, 1998
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Robert M. Ianniello
  • Patent number: 5728390
    Abstract: What is described herein is a cosmetic composition of an alpha-hydroxy acid, such as lactic acid or glycolic acid, or a beta-hydroxy acid, such as salicylic acid, and a polyvinylpyrrolidone-complexing agent, or derivative thereof, in a suitable solvent, useful for the treatment of skin problems, with only minimal skin irritation for the user.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: March 17, 1998
    Assignee: ISP Investments Inc.
    Inventor: John J. Merianos
  • Patent number: 5723524
    Abstract: A composition for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a hydrocarbon, through a conduit, comprising, (a) a polymer or copolymer selected from a terpolymer of vinyl pyrrolidone, vinyl caprolactam and an ammonium derivative monomer having from 6 to 12 carbon atoms, selected from the group consisting of dialkyl aminoalkyl methacrylamide, dialkyl dialkenyl ammonium halide and a dialkylamino alkyl acrylate or methacrylate, a copolymer of vinyl pyrrolidone and vinyl caprolactam, and a homopolymer of vinyl caprolactam, and (b) a low molecular weight glycol ether containing an alkoxy group having at least 3 carbon atoms.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: March 3, 1998
    Assignee: ISP Investments Inc.
    Inventors: Jeffrey M. Cohen, Philip F. Wolf, William D. Young
  • Patent number: 5716634
    Abstract: This invention relates to a crosslinked N-vinyl lactam polymer in the form of a stable, clear, flowable homogenized hydrogel composed of microparticles which can be passed through a screen of between about 40 and about 350 mesh size. The invention also concerns a clear, colorless, hydrogel which is required as a carrier for a cosmetically or pharmaceutically active substance such as a hair or skin conditioner and cosmetic or pharmaceutical skin base.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: February 10, 1998
    Assignee: ISP Investments Inc.
    Inventors: Susan Y. Tseng, Jui-Chang Chuang, Philip F. Wolf
  • Patent number: 5717012
    Abstract: This invention concerns a light weight sheet felt material suitable for use as roof and siding underlayment and insulation board facing which comprises on a dry basis(a) 60-80 wt. % cellulose fibers;(b) 15-30 wt. % glass fibers having a diameter of 5 to 16 microns and a length of 3/8-3/4 inch;(c) 4-10 wt. % binder and(d) 0.5-10 wt. % non-asphaltic, sizing agent having a flash point above 150.degree. F. and an evaporation rate less than one which is selected from the group consisting of anionic rosinous and amphipathic ester and anhydride sizes and mixtures thereof.The felt of this invention is of considerably lighter weight and higher porosity than other felting materials used for the same purpose and can be supplied in longer continuous sheet rolls than heretofore practical from a standpoint of handling, shipping, storage, and installation. Also the present sheet felt can be produced on conventional felt making equipment in a one step process.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: February 10, 1998
    Assignee: Building Materials Corporation of America
    Inventors: Alfredo A. Bondoc, Charles J. Horner, Jr.
  • Patent number: 5717045
    Abstract: Crosslinked copolymers of vinyl pyrrolidone (VP) and dimethylaminoethyl methacrylate (DMAEMA) for use in personal care products are made herein in aqueous solution by copolymerization of VP and DMAEMA monomers in aqueous solution using 1-vinyl-3-(E)-ethylidene pyrrolidone (EVP) as the crosslinking agent. The product is a one-phase, aqueous gel of the copolymer which is useful in hair care products.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: February 10, 1998
    Assignee: ISP Investments Inc.
    Inventor: Susan Y. Tseng
  • Patent number: 5711951
    Abstract: An aqueous product includes discrete, stabilized, microdroplets of an oil and an in situ polymerized water-soluble vinyl monomer containing a thickening agent to suspend the microdroplets homogeneously throughout the medium.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: January 27, 1998
    Assignee: ISP Investments Inc.
    Inventor: Stephen L. Kopolow
  • Patent number: 5698211
    Abstract: The present invention relates to the stabilization of an agricultural chemical concentrate in aqueous solution and the stabilized concentrate which comprises:(a) between about 0.1 and about 20 wt. % of a stabilizer composition comprising:(1) between about 10 and about 90 wt. % of a water-insoluble, non-crosslinked, film forming polymer, and(2) a polymer solubilizing amount of an aromatic petroleum distillate or an oxygen-containing solvent of an N-alkyl pyrrolidone, a C.sub.3 to C.sub.8 alkanol, a dibasic acid lower alkyl ester, an ether having a boiling point above 150.degree. C. or mixtures thereof and(b) between about 80 and about 99.9 wt. % concentrate containing a water-insoluble active agricultural chemical, a solvent for said agricultural chemical and a surfactant for said concentrate. The invention also relates to the use of said stabilized concentrate.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: December 16, 1997
    Assignee: ISP Investments Inc.
    Inventor: Kolazi S. Narayanan
  • Patent number: 5691462
    Abstract: This invention relates to a stabilized hydrocarbon vinyl ether or hydroxy substituted hydrocarbon vinyl ether containing between 3 and 20 carbon atoms which contains between about 0.005 and about 0.75 weight % of an alkali metal salt of a C.sub.1 to C.sub.14 hydrocarbon ester.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: November 25, 1997
    Assignee: ISP Investments Inc.
    Inventors: Mark M. Miller, James A. Dougherty, M. J. Rhonheimer
  • Patent number: 5691430
    Abstract: A process for polymerizing a vinyl ether monomer which comprises contacting the vinyl ether with an initiator system of silicon dioxide and a one or more metallic oxides.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: November 25, 1997
    Assignee: ISP Investments Inc.
    Inventors: James A. Dougherty, John G. Mc Kittrick, Raymond Bret Clark
  • Patent number: 5686067
    Abstract: A low VOC (volatile organic compounds) hair spray composition having a combination of desirable user performance characteristics is described herein. The hair fixative resin in the composition is a terpolymer of 40-75% by weight of a vinyl lactam, preferably vinyl pyrrolidone, 15-40% of a polymerizable carboxylic acid, preferably acrylic acid or methacrylic acid, and 5-25% of a hydrophobic monomer, preferably a long chain alkyl (C.sub.8 -C.sub.24) acrylate, methacrylate, acrylamide or methacrylamide. The terpolymer has a K-value of 30-55, preferably 40-50, which provides compositions having good sprayability in both pump and aerosol form, and small, fine spray particles.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: November 11, 1997
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, Colleen M. Rocafort, Robert B. Login
  • Patent number: 5684121
    Abstract: This invention relates to a coprecipitated binder composition used for the compression of pharmaceutically and agriculturally active components to provide a non-friable, readily soluble or dispersible pill or tablet. The invention also relates to the process for preparing the binder and to its incorporation in a formulation with the active ingredient.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: November 4, 1997
    Assignee: ISP Investments Inc.
    Inventor: Kolazi S. Narayanan
  • Patent number: 5684105
    Abstract: A process for making homogeneous copolymers of vinylpyrrolidone (VP) and 3-dimethylaminopropyl methacrylamide (DMAPMA) which form clear aqueous solutions having high cloud points. The process involves precharging VP and DMAPMA monomers in a predetermined ratio, and then feeding VP and DMAPMA at a predetermined rate, the ratio of the components in the initial charge and the feeding rates for the monomer being selected in accordance with the reactivity rates of the monomers towards copolymerization as opposed to homopolymerization.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: November 4, 1997
    Assignee: ISP Investments Inc.
    Inventors: Yuanzhen Zhong, Philip F. Wolf
  • Patent number: 5679366
    Abstract: Various liquid or low melting pesticide and herbicide formulations, previously formulated with organic solvents, are combined with a polymer in solution and co-precipitated to form a polymer complex which captures the pesticide or herbicide yet exists as a solid at ambient conditions. By preparing the pesticide or herbicide formulation as a solid complex, storage and handling of the formulation is possible without the potential for organic solvent emission. When the solid polymer complex is placed in water, a stable aqueous dispersion of the pesticide or herbicide is achieved as the polymer inhibits flocculation, with approximately 100% recovery of the pesticide or herbicide.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 21, 1997
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Ratan K. Chaudhuri
  • Patent number: 5676597
    Abstract: A composite shingle which comprises a hip, ridge or rake overlappable shingle of standard dimension bonded to a relatively rigid, randomly aligned fibrous, air permeable mat as an underlayer having a shorter length such that upon overlapping said shingles, the forward edge of the first shingle mat abuts the rear edge of the next shingle mat and provides a self-aligning, continuous vent area below the exposed surface of the installed shingles.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: October 14, 1997
    Assignee: Building Materials Corporation of America
    Inventors: Steven C. Bettoli, Alfredo A. Bondoc