Patents by Inventor Frederick W. Lawson

Frederick W. Lawson 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).

  • Resealable container for pulverized materials incorporating fragrance-producing ingredients
    Patent number: 5582344
    Abstract: A resealable fiber board container for pulverized fragrance-producing ingredients, e.g., for carpet deodorizer formulations, the interior walls of which incorporate a polyvinylidene chloride coating for limiting the escape of fragrance from the container. The coating may be readily stripped from the container after use to facilitate environmentally sound disposal.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: December 10, 1996
    Assignee: Church & Dwight Co., Inc.
    Inventors: Frederick W. Lawson, Grace A. Behrend, Frank E. Lindsay
  • Animal litter containing a water-swellable clay, carboxymethylcellulose, and siliceous coated bicarbonate particles
    Patent number: 5421291
    Abstract: There is disclosed an animal litter composition comprising 1) a particulate, water absorbent clayey component, e.g., sodium bentonite, containing at least one water-swellable clay mineral, e.g. montmorillonite; 2) a water-soluble salt, e.g., a sodium salt of a carboxymethylcellulose; and optionally (3) a solid particulate deodorizing additive component comprising sodium bicarbonate (SBC) or potassium bicarbonate (KBC), the particles of which are substantially coated with a mineral oil, mixed with a powdered siliceous material, e.g., expanded perlite, having a bulk density significantly lower than the density of SBC or KBC, the coated particles of SBC or KBC being stably adhered to and agglomerated with the particles of the siliceous material. On contact with a waste aqueous liquid such as urine, the litter composition forms clumps which can be easily removed from the remainder of the litter and can be disposed of with relatively little disintegration.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: June 6, 1995
    Assignee: Church & Dwight Co., Inc.
    Inventors: Frederick W. Lawson, Robert M. Wendell
  • Animal litters containing a deodorizing additive
    Patent number: 5303676
    Abstract: An animal litter composition comprising 1) a particulate, water absorbent clayey component, e.g., bentonite, containing at least one water-swellable clay mineral, e.g. montmorillonite; and 2) a solid particulate deodorizing additive component comprising sodium bicarbonate (SBC) or potassium bicarbonate (KBC), the particles of which are substantially coated with a mineral oil, mixed with a powdered siliceous material, e.g., expanded perlite, having a bulk density significantly lower than the density of SBC or KBC, the coated particles of SBC or KBC being stably adhered to and agglomerated with the particles of the siliceous material.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: April 19, 1994
    Assignee: Church & Dwight Co., Inc.
    Inventor: Frederick W. Lawson
  • Deodorizing additives for animal litters
    Patent number: 5295456
    Abstract: There is disclosed a solid particulate deodorizing additive composition for a water-absorbent animal litter comprising sodium bicarbonate (SBC) or potassium bicarbonate (KBC), the particles of which are substantially coated with a mineral oil, mixed with a powdered siliceous material, e.g., expanded perlite, having a bulk density significantly lower than the density of SBC or KBC, the coated particles of SBC or KBC being stably adhered to and agglomerated with the particles of the siliceous material.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: March 22, 1994
    Assignee: Church & Dwight Co., Inc.
    Inventor: Frederick W. Lawson
  • Air deodorizer composition and method
    Patent number: 4851212
    Abstract: An air deodorizer, and a method for deodorizing rooms therewith, utilizing an aerosol of a solution containing from 2-25% by weight of non-toxic, non-oxidizing, deodorizing agent, said solution constituting liquid droplets having a weight average droplet size of less than 50 microns, more than 90% of said droplets having a size, by count, of less than 10 microns.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: July 25, 1989
    Assignee: Church & Dwight Co. Inc.
    Inventors: Anthony E. Winston, Raymond S. Brown, Frederick W. Lawson, Norman Usen
  • Air deodorizer composition and method
    Patent number: 4740366
    Abstract: An air deodorizer, and a method for deodorizing rooms therewith, utilizing an aerosol of a solution containing from 2-25% by weight of non-toxic, non-oxidizing, deodorizing agent, said solution constituting liquid droplets having a weight average droplet size of less than 50 microns, more than 90% of said droplets having a size, by count, of less than 10 microns.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: April 26, 1988
    Assignee: Church & Dwight Co., Inc.
    Inventors: Anthony E. Winston, Raymond S. Brown, Frederick W. Lawson, Norman Usen