Patents by Inventor Ellen Louise Swan

Ellen Louise Swan 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).

  • Multiple solvent cleaning system
    Patent number: 6355113
    Abstract: A non-aqueous cleaning process uses an organic solvent for removing soil or surface contamination from contaminated articles such as printed circuit boards which are cleaned by immersion into a sump compartment of a cleaning tank containing the organic cleaning solvent. The organic solvent is preferably a hydrocarbon solvent. The cleaned articles, now coated with the organic cleaning solvent, are then disposed in a rinsing sump containing a fluorocarbon based rinsing solvent having an affinity for the organic cleaning solvent. The organic solvent is thus removed from the articles which are then dried without waste water as in a conventional solvent vapor degreasing solvent process.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: March 12, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: David Nalewajek, Rajat Subhra Basu, David Paul Wilson, Michael Van Der Puy, Ellen Louise Swan, Peter Brian Logsdon, Gary J. Zyhowski, Hepburn Ingham, Daniel Franklin Harnish, Joel Edward Rodgers
  • Use of fluorocarbons as a fusing agent for toners in laser printers
    Patent number: 6296981
    Abstract: A method and composition for fusing toner to paper using hydrofluorocarbons or perfluorinated C1-C4 alkyl alkyl ethers as a toner fusing agent in a cold fusion process. The composition utilizes a uniform mixture of at least one chlorine-free hydrofluorocarbon or perfluorinated C1-C4 alkyl alkyl ether or mixture thereof, and preferably at least one toner stabilizer and/or an optional solvent. When used, the chlorine-free composition achieves satisfactory fusing and is more environmentally advantageous than chlorine containing toner fusing agents. The composition has a zero ozone depletion potential and a low global warming potential.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: October 2, 2001
    Assignee: AlliedSignal Inc.
    Inventor: Ellen Louise Swan
  • Use of fluorocarbons as a fusing agent for toners in laser printers
    Patent number: 5769935
    Abstract: A method and composition for fusing toner to paper using hydrofluorocarbons or perfluorinated C.sub.1 -C.sub.4 alkyl alkyl ethers as a toner fusing agent in a cold fusion process. The composition utilizes a uniform mixture of at least one chlorine-free hydrofluorocarbon or perfluorinated C.sub.1 -C.sub.4 alkyl alkyl ether or mixture thereof, and preferably at least one toner stabilizer and/or an optional solvent. When used, the chlorine-free composition achieves satisfactory fusing and is more environmentally advantageous than chlorine containing toner fusing agents. The composition has a zero ozone depletion potential and a low global warming potential.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: June 23, 1998
    Assignee: AlliedSignal Inc.
    Inventor: Ellen Louise Swan
  • Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and C.sub.1 -C.sub.3 alcohols for cleaning
    Patent number: 5683974
    Abstract: Novel azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and C.sub.1 -C.sub.3 alcohols or mixtures thereof are useful in solvent cleaning.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: November 4, 1997
    Assignee: AlliedSignal Inc.
    Inventors: Earl August Eugene Lund, deceased, Hang Thanh Pham, Ian Robert Shankland, Ellen Louise Swan