Patents by Inventor John C. Wilson

John C. Wilson 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: 5716749
    Abstract: Bis?2-(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)-2-cyanoacetamide! charge-control agents are disclose. The agents have the structure: ##STR1## R and R.sup.1 are defined in the specification. The charge-control agents are useful in electrostatographic toners and developers.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: February 10, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Robert D. Fields
  • Patent number: 5714295
    Abstract: A toner composition comprising a polymeric binder and a (1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)acetate charge-control agent is disclosed. The agent has the general structure (I): ##STR1## R is defined in the specification.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: February 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Robert D. Fields
  • Patent number: 5714293
    Abstract: There is provided a toner composition, useful in electrostatographic processes, comprising a polymeric binder and a charge-control agent having the general structure: ##STR1## wherein R.sup.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: February 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Peter S. Alexandrovich
  • Patent number: 5703265
    Abstract: A compound having the structure: ##STR1## is disclosed. R.sup.1 is defined in the specification. The compounds are charged control agents for use in electrostatographic toners and developers.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: December 30, 1997
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Peter S. Alexandrovich
  • Patent number: 5681680
    Abstract: There is provided a compound, useful in electrostatographic processes in the toner composition along with a polymeric binder, having the general structure: ##STR1## wherein R.sup.1 is selected from the group consisting of alkylene; arylene; arylenedialkylene; alkylenediarylene; oxydialkylene; and substituted or unsubstituted oxydiarylene; andR.sup.2 and R.sup.3, which can be the same or different, are independently selected from the group consisting of alkyl containing from 1 to 20 carbons; cycloalkyl containing from 3 to 18 carbons; unsubstituted aromatic ring systems; or aromatic ring systems substituted with one or more alkyl, hydroxy, alkoxy, carboxy, carboalkoxy, nitro, halo, cyano, amino, dialkylamino, acyl, trihalomethyl or alkylsulfonyl; heteroaromatic ring systems; said ring systems having a solitary ring or 2 to 3 linked or fused rings, and containing from 3 to 34 carbons; and R.sup.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: October 28, 1997
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Peter S. Alexandrovich
  • Patent number: 5616797
    Abstract: An electrophotographic toner having polymeric binder and a charge control agent selected from the group consisting of sulfonamides having the general structure: ##STR1## and metal salts thereof. T.sup.1 is independently selected from H, alkyl having from 1 to 20 carbons, cycloalkyl having from 3 to 18 carbons, and aromatic and heteroaromatic ring systems having a solitary ring or 2 to 3 linked or fused rings. R.sup.1 is O, S, N--H, N--R.sup.5, or N--L--R.sup.5 ; where L is a linking group selected from: ##STR2## and R.sup.5 is independently selected from alkyl having from 1 to 20 carbons, cycloalkyl having from 3 to 18 carbons, and aromatic and heteroaromatic ring systems having a solitary ring or 2 to 3 linked or fused rings. L.sup.1 and L.sup.2 are each independently a direct link or divalent alkyl or fluoroalkyl having from 1 to 20 carbons. R.sup.a and R.sup.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: April 1, 1997
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Peter S. Alexandrovich, Steven M. Bonser
  • Patent number: 5616444
    Abstract: New electrostatographic toners and developers are provided containing charge-control agents comprising bis(ammonium) tetrahalocuprate salts having the structure: ##STR1## wherein R, R.sup.1, R.sup.2 and R.sup.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: April 1, 1997
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Dinesh Tyagi
  • Patent number: 5604069
    Abstract: New electrostatographic toners and developers are provided containing charge-control agents comprising ammonium trihalozincate salts having the structure: ##STR1## wherein R, R.sup.1, R.sup.2 and R.sup.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: February 18, 1997
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Dinesh Tyagi
  • Patent number: 5582946
    Abstract: New electrostatographic toners and developers are provided containing charge-control agents comprising bis(ammonium) tetrahalomanganate salts having the structure: ##STR1## wherein R, R.sup.1, R.sup.2 and R.sup.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: December 10, 1996
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Dinesh Tyagi
  • Patent number: 5571457
    Abstract: An electrically conductive or semi-conductive polymeric material which includes a blend of:(i) a bis[oxydiethylenebis(polycaprolactone)yl]sulfoaryldicarboxylate or a bis[oxydiethylenebis(polycaprolactone)yl]sulfonamidosulfonylaryldicarboxyl ate, and(ii) a complex of a ferric halide and ethylene glycol or an oligoethylene glycol selected from di-, tri-, or tetraethylene glycol,to provide the material with its conductive properties.The material has a resistivity of from about 10.sup.6 to about 5.times.10.sup.11 ohm cm and can be used in the fabrication of biasable transfer members such as, for example, a biasable transfer roll to transfer electrostatographic toner images from a photoconductor to a final support material such as a sheet of paper wherein the member electrically cooperates with the photoconductor to establish a directional force field therebetween.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: November 5, 1996
    Assignee: Eastman Kodak Company
    Inventors: William B. Vreeland, John C. Wilson, Mark C. Zaretsky
  • Patent number: 5561020
    Abstract: New electrostatographic toners and developers are provided containing charge-control agents comprising quaternary phosphonium trihalozincate salts having the structure: ##STR1## wherein R is selected from an unsubstituted alkyl group having from 1 to 24 carbon atoms; a substituted alkyl group having from 1 to 24 carbon atoms substituted with one or more hydroxy-, carboxy-, alkoxy-, carboalkoxy-, acyloxy-, nitro-, cyano-, keto- or halo-groups; a cycloalkyl group having from 3 to 7 carbon atoms; an alkaryl group having from 1 to 20 carbon atoms in the alkyl group and 6 to 14 carbon atoms in the aryl group; an aralkyl group having from 1 to 4 carbon atoms in the alkyl group and 6 to 14 carbon atoms in the aryl group wherein the aryl group is unsubstituted or substituted with one or more alkyl-, hydroxy-, carboxy-, alkoxy-, carboalkoxy-, acyloxy-, amino-, nitro-, cyano-, keto- or halo-groups; phenyl or substituted phenyl;R.sup.1, R.sup.2 and R.sup.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: October 1, 1996
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Dinesh Tyagi
  • Patent number: 5554474
    Abstract: A member for electrically cooperating with a conductive support surface to attract charged toner particles from the surface towards the member is disclosed. The member comprises a conductive substrate capable of supporting a uniform bias potential thereon and at least one coating comprising a resilient elastomeric polyurethane.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: September 10, 1996
    Assignee: Eastman Kodak Company
    Inventors: William B. Vreeland, John C. Wilson, Mark C. Zaretsky
  • Patent number: 5547803
    Abstract: New electrostatographic toners and developers are provided containing charge-control agents comprising quaternary phosphonium trihalocuprate salts having the structure: ##STR1## wherein R is selected from an unsubstituted alkyl group having from 1 to 24 carbon atoms; a substituted alkyl group having from 1 to 24 carbon atoms substituted with one or more hydroxy-, carboxy-, alkoxy-, carboalkoxy-, acyloxy-, nitro-, cyano-, keto- or halo-groups; a cycloalkyl group having from 3 to 7 carbon atoms; an alkaryl group having from 1 to 20 carbon atoms in the alkyl group and 6 to 14 carbon atoms in the aryl group; an aralkyl group having from 1 to 4 carbon atoms in the alkyl group and 6 to 14 carbon atoms in the aryl group wherein the aryl group may be unsubstituted or substituted with one or more alkyl-, hydroxy, carboxy-, alkoxy-, carboalkoxy-, acyloxy-, amino-, nitro-, cyano-, keto- or halo-groups; phenyl or substituted phenyl;R.sup.1, R.sup.2 and R.sup.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: August 20, 1996
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Dinesh Tyagi
  • Patent number: 5541001
    Abstract: The invention provides rolls, belts and other biasable members having at least one layer or coating of an elastomeric resilient polyurethane. The polyurethane is formed by reacting:(a) a polyisocyanate prepolymer;and(b) a hardening mixture comprising:(i) a polyol and(ii) as a conductivity control agent an ammonium tetrahaloferrate salt of the formula ##STR1## The R substituents are defined in the specification.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: July 30, 1996
    Assignee: Eastman Kodak Company
    Inventors: William B. Vreeland, John C. Wilson, Mark C. Zaretsky
  • Patent number: 5523484
    Abstract: An electrophotographic toner having polymeric binder and a charge control agent selected from the group consisting of sulfonamides having the general structure: ##STR1## Each R.sup.1 is independently O, S, N-H, N-R.sup.z, or N-L-R.sup.z ; where L is a linking group selected from: ##STR2## and R.sup.z is independently selected from the group consisting of alkyl having from 1 to 20 carbons, cycloalkyl having from 3 to 18 carbons, and aromatic and heteroaromatic ring systems having a solitary ring or 2 to 3 linked or fused rings. R.sup.a, R.sup.b, and R.sup.c are each independently a ring system of a single ring or 2 or 3 fused or linked rings, said ring system having from 3 to 34 carbons, including substituent carbons. d is an integer from 0 to 3. e is an integer from 0 to 3. The sum of d+e is 2 or 3.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: June 4, 1996
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Peter S. Alexandrovich
  • Patent number: 5516616
    Abstract: New electrostatographic toners and developers are provided containing charge-control agents comprising certain quaternary ammonium salts having good thermal stability and good charging characteristics. The quaternary ammonium salts are: N-[(3,5-di-tert-alkyl-4-hydroxybenzoyloxy)alkyl]ammonium salt or a quaternary N-[(3,5-di-tert-alkyl-4-hydroxybenzoyloxy)aryl]ammonium salt having the structure: ##STR1## wherein the substituents are as defined herein.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: May 14, 1996
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Dinesh Tyagi
  • Patent number: 5512407
    Abstract: New electrostatographic toners and developers are provided containing charge-control agents comprising bis(quaternary phosphonium) tetrahalomanganate salts having the structure: ##STR1## wherein R is selected from an unsubstituted alkyl group having from 1 to 24 carbon atoms; a substituted alkyl group having from 1 to 24 carbon atoms substituted with one or more hydroxy-, carboxy, alkoxy-, carboalkoxy-, acyloxy-, nitro-, cyano-, keto- or halo-groups; a cycloalkyl group having from 3 to 7 carbon atoms; an alkaryl group having from 1 to 20 carbon atoms in the alkyl group and 6 to 14 carbon atoms in the aryl group; an aralkyl group having from 1 to 4 carbon atoms in the alkyl group and 6 to 14 carbon atoms in the aryl group wherein the aryl group may be unsubstituted or substituted with one or more alkyl-, hydroxy-, carboxy-, alkoxy-, carboalkoxy-, acyloxy-, amino-, nitro-, cyano-, keto- or halo-groups; phenyl or substituted phenyl;R.sup.1, R.sup.2 and R.sup.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: April 30, 1996
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Dinesh Tyagi
  • Patent number: 5508140
    Abstract: New electrostatographic toners and developers are provided containing charge-control agents comprising quaternary phosphonium salts having the structure: ##STR1## wherein R.sup.1 and R.sup.2 are tertiary-alkyl containing from 4 to 8 carbon atoms; R.sup.3 is selected from an unsubstituted alkyl group having from 1 to 24 carbon atoms; a substituted alkyl group having from 1 to 24 carbon atoms substituted with one or more hydroxy-, carboxy, alkoxy-, carboalkoxy-, acyloxy-, nitro-, cyano-, keto- or halo-groups; a cycloalkyl group having from 3 to 7 carbon atoms; an alkaryl group having from 1 to 20 carbon atoms in the alkyl group and 6 to 14 carbon atoms in the aryl group; an aralkyl group having from 1 to 4 carbon atoms in the alkyl group and 6 to 14 carbon atoms in the aryl group wherein the aryl group may be unsubstituted or substituted with one or more alkyl-, hydroxy-, carboxy-, alkoxy-, carboalkoxy-, acyloxy-, amino-, nitro-, cyano-, keto- or halo-groups; phenyl or substituted phenyl; andR.sup.4, R.sup.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: April 16, 1996
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Dinesh Tyagi
  • Patent number: 5491044
    Abstract: New electrostatographic toners and developers are provided containing charge-control agents comprising 3,5-di-tertiary-alkyl-4-hydroxybenzenesulfonate salts having the structure: ##STR1## The substituents are defined in the specification.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: February 13, 1996
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Dinesh Tyagi
  • Patent number: 5464719
    Abstract: New electrostatographic toners and developers are provided containing charge-control agents comprising ammonium tetrahaloferrate salts having the structure: ##STR1## wherein R, R.sup.1, R.sup.2 and R.sup.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: November 7, 1995
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Dinesh Tyagi