Patents by Inventor Edward Vanzo

Edward Vanzo 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: 5075432
    Abstract: The process entails forming a droplet of water, cyclodextrin and base in a non-polar solvent such as methylisobutylketone using polyvinyl butyral as an emulsifier. A cross-linking agent such as epichlorohydrin is reacted with the cyclodextrin and emulsifying agent to form the spherical polymer bead.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: December 24, 1991
    Assignee: Edward Vanzo
    Inventor: Edward Vanzo
  • Patent number: 4077804
    Abstract: Processes for producing colored toner particles are provided comprising mixing a monomer, a colorant and an initiator to form an oil soluble organic phase; dispersing this oil soluble phase in controlled size between 5 to 20 microns in a water phase, employing a suspending agent, for example polyvinyl alcohol; polymerizing, employing conventional suspension polymerization techniques; introducing a second monomer which is allowed to diffuse into the first polymer and consequently swells the polymer; introducing a water soluble initiator; and heating this reaction mixture to effect a polymerization of the second monomer and form the desired toner.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: March 7, 1978
    Assignee: Xerox Corporation
    Inventor: Edward Vanzo
  • Patent number: 4071670
    Abstract: A method of forming particles of between about 5 and about 50 microns utilizing a two stage process wherein monomer possibly containing pigments, dyes and/or fillers such as silicon and magnetite, as well as chemical reagents such as crosslinking agents and chain transfer agents, is sized to a narrow range by high shear mixing then polymerized during slow speed agitation to form polymeric particles.
    Type: Grant
    Filed: August 2, 1976
    Date of Patent: January 31, 1978
    Assignee: Xerox Corporation
    Inventors: Edward Vanzo, Lewis S. Smith