Patents by Inventor Loren Shelffo

Loren Shelffo 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).

  • Apparatus and method for producing an electrostatic image using water-base toner
    Patent number: 5561507
    Abstract: An apparatus and method for producing an electrostatic image is disclosed. A thin layer of hydrophobic particles is coated on the surface of the charge bearing member which can be a photoconductor or a dielectric. The hydrophobic particles may also be used on the developer roller which applies the toner. A liquid toner made substantially of a hydrophilic liquid, such as water, and suspended pigment binders is used. The invention is applicable to both one and multiple color systems.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: October 1, 1996
    Assignees: Page Station Technology, Inc., Technogenesis, Inc.
    Inventors: Loren Shelffo, Kensuke Fukae
  • Transfer fluid for spirit duplicating systems
    Patent number: 4964910
    Abstract: A transfer fluid for spirit fluid type duplicating systems is disclosed which comprises, generally a polyhydric alcohol, 20 to 90% by weight; and water, 10 to 80% by weight. For certain machines, a wetting agent 0 to 2% by weight, can be used with an adjustment accordingly in the amounts of the other materials.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: October 23, 1990
    Assignee: Repeat-O-Type Manufacturing Corporation
    Inventors: Donald R. Beck, Loren Shelffo, Susan P. Ontawar
  • Thermoelectric device for heating and cooling the skin
    Patent number: D298458
    Type: Grant
    Filed: April 3, 1986
    Date of Patent: November 8, 1988
    Inventors: Ely Margolin, Loren Shelffo