Patents Represented by Attorney John M. Lynn
  • Patent number: 7952484
    Abstract: A method and apparatus are disclosed which involve an improved way to coerce use of a soap dispenser (or other hygiene device). A soap dispenser according to at least one embodiment, includes a teaching or entertaining device that is fun and informative that is triggered when the soap dispenser is utilized. The soap dispenser may also be utilized as an advertising tool.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: May 31, 2011
    Assignee: Hygiene Screen LLC
    Inventor: John M. Lynn
  • Patent number: 5091498
    Abstract: The present invention describes the use of 1,3-dialkylimidazole-2-thiones as a catalyst for epoxy/anhydride reactions (and other reactions) and a method of making these catalysts. Epoxy/anhydride coatings containing these improved catalysts offer the following advantages: improved appearance (especially since even weeks after application the coatings still have a "wet" look); better pot-life; improved resistance to alkaline substances which will improve durability; improved solubility; and coatings which have a reduced volatile organic content (VOC).
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: February 25, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Anthony J. Arduengo, III, Robert J. Barsotti, Patrick H. Corcoran
  • Patent number: 5084542
    Abstract: The present invention describes the use of 1,3-disubstituted imidazole-2-thiones as catalysts for crosslinking epoxy functionalized materials with isocyanate functionalized materials. Epoxy/Isocyanate coatings containing these improved catalysts offer the following advantages: excellent pot-life with rapid cure in air at ambient temperatures, control of hardness and toughness of the cured resins, coatings which have a reduced volatile organic content, a curing process which provides clear colorless coatings, and excellent resistance to acids and bases which will improve durability.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: January 28, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Anathony J. Arduengo, III, Patrick H. Corcoran
  • Patent number: 5068153
    Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about(a) 25-90% by weight, based on the weight of the binder, of an acrylic polymer having at least two reactive anhydride groups composed of polymerized monomers of an ethylenically unsaturated anhydride and polymerized monomers from the group consisting of alkyl methacrylate, alkyl acrylate and any mixtures thereof, wherein the alkyl groups have 1-8 carbon atoms and the polymer has a weight average molecular weight of about 2,000-50,000;(b) 5-50% by weight, based on the weight of the binder, of a glycidyl component having at least two reactive glycidyl groups; and(c) 0.1-7% by weight, based on the weight of the binder, of a phosphonium catalyst or a blend of a phosphonium catalyst and a tertiary amine catalyst which may or may not contain hydroxyl groups.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: November 26, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert Barsotti, Lester S. Cohen
  • Patent number: 5024387
    Abstract: A method for optimizing the processing of continuous media mills is disclosed. It has been found that using a differential pressure device to measure the pressure drop across the mill allows the on line determination of the state of media fluidization in the mill. Operation within an optimum mill base flow rate range is needed to have good fluidization of the media so that grinding can be efficient. Using differential pressure measurement allows a precise determination of the mill base flow rate range which provides full fluidization of the media and mill base flow rate control within that range.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: June 18, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: An-Gong Yeh
  • Patent number: 5022592
    Abstract: Media mill having a magnetic circuit of magnetic impellers on a shaft, magnetized media, and a magnetizable outer shell which provides improved efficiency.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: June 11, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Howard Zakheim, Peter M. Clinton, James D. Goldschneider, Christopher A. Kasmer, Markus Zahn, Charles L. Hoffmeyer
  • Patent number: 4994507
    Abstract: Disclosed herein are cathodic electrodepositable coating baths containing lead cyanamide as a supplementary catalyst. It has been found that using lead cyanamide in conjunction with a primary metal catalyst (e.g. dibutyltin oxide) results in an electrocoat system with superior underbake cure without sacrificing chipping characteristics during overbake cure.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: February 19, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Tapan K. Debroy, Ding Y. Chung, Craig R. Deschner, Sioe-Heng A. Tjoe
  • Patent number: 4981713
    Abstract: This invention relates to the use of plasma technology for coating thin polymer films on steel. The process utilizes DC power, system pressures of 0.01-1.0 torr, the steel substrate is made the cathode, and the anodes are equipped with magnetic enhancement. The result is a uniform, pin-hole free, dense organic coating. Furthermore, there is minimal deposition of the organic film on the anodes or interior of the chamber.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: January 1, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Hirotsugu Yasuda, Duck J. Yang
  • Patent number: 4980398
    Abstract: Disclosed herein is a cathodic electrodepositable resin containing polyamine enamine. It has been discovered that reacting epoxy resins with polyamine enamine is a viable method of introducing amine functionality to the epoxy resin. The polyamine enamine route results in the desired high pH and stable dispersion in the electrocoat bath.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: December 25, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ding Y. Chung, Tapan K. Debroy
  • Patent number: 4980429
    Abstract: A low cure cathodic electrodepositable resin is disclosed. The backbone of the resin is a polyepoxide amine adduct which is crosslinked with aminoplast resins and catalyzed by metal catalysts. The resin is capable of curing in a basic environment at a temperature below 150.degree. C. The resin can be salted with an acid and can be dissolved or dispersed in water. The aqueous dispersions can then be formulated into electrocoat primer coatings for metal objects.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: December 25, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward Chu
  • Patent number: 4980196
    Abstract: This invention relates to the use of low temperature plasma technology for significantly improved corrosion protection of steel. The plasma process involves pretreating of the steel surfaces by oxygen plasma and thin film deposition by polymerization of certain precursors on the steel. The process utilizes DC power, substrates as the cathode, magentron anodes, and system pressures of 0.01-0.5 torr. After the thin film plasma deposition it is also preferably to put a primer coating over the thin film.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: December 25, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Hirotsugu Yasuda, Tyau-Jeen Lin, Duck J. Yang, Joseph A. Antonelli
  • Patent number: 4976833
    Abstract: An electrodepositable cathodic resin is disclosed. The resin is the reaction product of a polyepoxide amine adduct and a crosslinking agent which is polyol modified tetramethylxylylene diisocyanate blocked with alcohol or caprolactam. The resulting resin results in a nonyellowing film which is very smooth.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: December 11, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Tapan K. Debroy, Ding Y. Chung
  • Patent number: 4975474
    Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about(a) 25-94% by weight, based on the weight of the binder, of an acrylic polymer having at least two reactive anhydride groups composed of polymerized monomers of an ethylenically unsaturated anhydride and polymerized monomers from the group consisting of alkyl methacrylate, alkyl acrylate and any mixtures thereof, wherein the alkyl groups have 1-8 carbon atoms and the polymer has a weight average molecular weight of about 2,000-50,000;(b) 5-50% by weight, based on the weight of the binder, of a glycidyl component having at least two reactive glycidyl groups;(c) 1-40% by weight, based on the weight of the binder, of a self-stabilized dispersed resin; andthe composition contains about 0.1-5% by weight; based on the weight of the binder, of a catalyst.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: December 4, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert J. Barsotti, Patrick H. Corcoran
  • Patent number: 4963600
    Abstract: A method for minimizing the inherent yellowness of any kind of clear coating is disclosed. This method involves the addition of very small amounts of blue pigments or dyes to the clear coating so that chroma neutralization occurs. The chroma neutralization results in a clear coat which is crystal clear in appearance.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: October 16, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Joseph F. Coughlin
  • Patent number: 4952626
    Abstract: Coating composition containing hydroxy functional polyester graft copolymers are provided. The copolymer is crosslinkable by hydroxy-reactive crosslinking agent and, in particular, is suitable for use in thermosetting coating compositions adapted to form a flexible cured coating over a variety of substrates, such as metal and plastic. The copolymer has a number average molecular weight between about 1,300 and about 15,000, has a hydroxy number between about 30 and about 300, and is the reaction product of carbon-carbon double bond-reactive monoethylenically unsaturated monomer with hydroxy functional carbon-carbon double bond-bearing branched polyester macromonomer. The macromonomer is the reaction product of (i) isocyanato monomer having the formula: ##STR1## with (ii) hydroxy functional polyester reactant containing 0-1- urethane linkages per molecule.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: August 28, 1990
    Assignee: E. I. du pont de Nemours and Company
    Inventors: Panagiotis I. Kordomenos, Rose A. Ryntz
  • Patent number: 4946507
    Abstract: A pigment dispersant useful in cathodic electrocoat compositions is disclosed. This pigment dispersant is the reaction product of alkylene carbonate and a primary amine containing an imidazoline moiety. This pigment dispersant allows the maximazation of pigment to binder ratios and the minimization of volatile organic content (VOC) in electrocoat baths.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: August 7, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Stephen C. Peng, Taddesse Gebregiorgis
  • Patent number: 4945145
    Abstract: A curable silane resin, and a process for making same, having at least one of two units selected from the group consisting of a prepolymer (C) and a prepolymer (F); the prepolymer (C) having the formula (I): ##STR1## and the prepolymer (F) having the formula (III): ##STR2##The curable resin of our invention has excellent flexibility, solvent resistance and adhesion to organic materials. Furthermore our process for preparing the resin is simpler, more easily reproducible, and results in less unwanted by-prodducts than earlier processes for preparing similar silane resins.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: July 31, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Paul P. Bruylants, Patrick H. Corcoran, John A. Simms
  • Patent number: 4908397
    Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about(a) 25-94% by weight, based on the weight of the binder, of an acrylic polymer having at least two reactive anhydride groups composed of polymerized monomers of an ethylenically unsaturated anhydride and polymerized monomers from the group consisting of alkyl methacrylate, alkyl acrylate and any mixtures thereof, wherein the alkyl groups have 1-8 carbon atoms and the polymer has a weight average molecular weight of about 2,000-50,000;(b) 5-50% by weight, based on the weight of the binder, of a glycidyl component having at least two reactive glycidyl groups;(c) 1-40% by weight, based on the weight of the binder, of a self-stabilized dispersed resin; andthe composition contains about 0.1-5% by weight; based on the weight of the binder, of a catalyst.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: March 13, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert J. Barsotti, Patrick H. Corcoran
  • Patent number: 4906677
    Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about(a) 25-90% by weight, based on the weight of the binder, of an acrylic polymer having at least two reactive anhydride groups composed of polymerized monomers of an ethylenically unsaturated anhydride and polymerized monomers from the group consisting of alkyl methacrylate, alkyl acrylate and any mixtures thereof, wherein the alkyl groups have 1-8 carbon atoms and the polymer has a weight average molecular weight of about 2,000-50,000;(b) 5-50% by weight, based on the weight of the binder, of a glycidyl component having at least two reactive glycidyl groups; and(c) 0.1-7% by weight, based on the weight of the binder, of a phosphonium catalyst or a blend of a phosphonium catalyst and a tertiary amine catalyst which may or may not contain hydroxyl groups.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: March 6, 1990
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Robert Barsotti, Lester S. Cohen
  • Patent number: 4900415
    Abstract: A low temperature cure electrodepositable cathodic resin is disclosed. The resin is the reaction product of a polyepoxide amine adduct and a novel blocked crosslinking agent. The crosslinking agent of our invention is tetramethylxylene diisocyanate blocked with any suitable blocking agent. The resulting resin can be cured at relatively low temperatures (250.degree.-275.degree. F.), which potentially allows the use of the resin with articles containing plastics.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: February 13, 1990
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Ding Yu Chung, Tapan K. DebRoy