Patents by Inventor Joseph W. Raksis

Joseph W. Raksis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5075427
    Abstract: The present invention is directed to aqueous compositions of organic diazo compounds which are capable of being readily handled in commercial applications and to the surface modification of polymeric substrates utilizing the subject diazo composition.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: December 24, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Uan G. Kang, Joseph W. Raksis, Clifton L. Kehr, Clifford A. Ferrin, Jr.
  • Patent number: 4379869
    Abstract: High molecular weight protonated latices stable typically up to pH of about 10 are cathodically electrodeposited onto electroconductive substrates, forming uniform, flexible coatings without the need of subsequent heat curing.
    Type: Grant
    Filed: January 15, 1981
    Date of Patent: April 12, 1983
    Assignee: W. R. Grace & Co.
    Inventors: Bahram Siadat, Joseph W. Raksis
  • Patent number: 4312965
    Abstract: A process for forming polymeric polyamine/amide by contacting, in a liquid media, a hydrocarbon polymer having olefinic double bonds therein, a nitrogen containing compound selected from ammonia, or a monomeric primary or secondary amine, water, and carbon monoxide, in the presence of a catalytic amount of a rhodium atom containing compound selected from metallic rhodium, rhodium salts, rhodium oxides, rhodium carbonyls and ligands thereof at a temperature of from 50.degree. to 250.degree. C. and at a pressure of from about 30 to about 300 atmospheres.
    Type: Grant
    Filed: February 22, 1980
    Date of Patent: January 26, 1982
    Assignee: W. R. Grace & Co.
    Inventors: Felek Jachimowicz, Joseph W. Raksis
  • Patent number: 4282167
    Abstract: The present invention is a method of subjecting amides to a modified Hofmann reaction using a 2-phase aqueous/organic system. The Hofmann reaction is modified in the sense that the product is an organic isocyanate rather than an amine. Generally, the reaction employs a phase transfer catalyst although, for tertiary amides it has been discovered that use of the catalyst is not required.
    Type: Grant
    Filed: January 16, 1980
    Date of Patent: August 4, 1981
    Assignee: W. R. Grace & Co.
    Inventors: Anita O. Sy, Joseph W. Raksis
  • Patent number: 4224217
    Abstract: The char-forming characteristics of aromatic polymers containing one or more combustion resistant components are improved by incorporating therein a polybenzyl, a polyallyl, or an allyl/benzyl moiety. As an example, a styrene polymer comprising a halogenated comonomer such as bromostyrene is rendered char-forming by the presence of copolymerized vinylbenzyl chloride in the styrene polymer. Such polymeric compositions are useful in the manufacture of shaped articles such as housings for electrical appliances.
    Type: Grant
    Filed: January 5, 1978
    Date of Patent: September 23, 1980
    Assignee: The Dow Chemical Company
    Inventors: Kent S. Dennis, Joseph W. Raksis