Patents by Inventor Dorey Lum

Dorey Lum 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: 5916960
    Abstract: A coating composition has storage stability, and provides a highly durable coating on various substrates, such as wood. It can be a clear coating or a staining composition. The critical components of the composition are a self-curing vinyl polymer, an ammonia-neutralized polyurethane and a water-soluble catalyst to promote rapid curing under ambient conditions.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: June 29, 1999
    Assignee: The Sherwin-Williams Company
    Inventors: Dorey Lum, Prashant Patel
  • Patent number: 5439952
    Abstract: A coating composition is stable upon long term storage and provides a highly durable coating on various substrates, such as wood. It can be a clear coating or a staining composition. The critical components of the composition are a self-curing vinyl polymer, a neutralized polyurethane, a water-soluble catalyst to promote rapid curing under ambient conditions, and an aldehyde, carbodiimide or polyfunctional aziridine which reduces discoloration of the composition upon storage.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: August 8, 1995
    Assignee: The Thompson Minwax Company
    Inventors: Dorey Lum, Patel Prashant
  • Patent number: 4000214
    Abstract: Curable resin compositions comprising a blend of an epoxy resin, a polyurethane resin which comprises the reaction product of (A) a polyisocyanate, (B) a polyester resin and (C) a dihydric alcohol, and a standard epoxy resin curing agent. These resinous compositions, when cured, retain excellent resilience and exhibit outstanding adhesion. They are especially useful for bonding vinyl materials.
    Type: Grant
    Filed: May 8, 1975
    Date of Patent: December 28, 1976
    Assignee: Reichhold Chemicals, Inc.
    Inventors: Dorey Lum, Stuart J. Hartman, Robert E. Schaefer