Patents by Inventor Rowland A. Griffin

Rowland A. Griffin 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).

  • Method of making sound insulation with high loft
    Patent number: 7776251
    Abstract: Sound insulation core material is made by melt-blowing a polypropylene resin having a hydroxystearamide wax additive to produce a fibrous mass having improved loft. The core material is encased between outer layers of spun-bond polyethylene fibers by longitudinal seams and transverse seams to form a product suitable for use in dishwashers.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: August 17, 2010
    Inventors: Rowland Griffin, John P. Field
  • Broad spectrum sound insulation
    Publication number: 20060234590
    Abstract: Sound insulation core material is made by melt-blowing a polypropylene resin having a hydroxystearamide wax additive to produce a fibrous mass having improved loft. The core material is encased between outer layers of spun-bond polyethylene fibers by longitudinal seams and transverse seams to form a product suitable for use in dishwashers.
    Type: Application
    Filed: February 28, 2006
    Publication date: October 19, 2006
    Inventors: Rowland Griffin, John Field
  • Acoustic insulation blanket for dishwashers
    Publication number: 20060037630
    Abstract: An acoustic insulation blanket for a dishwasher has a head portion, a pair of wing portions, one on either side of the head portion, and a tail portion defined by V-shaped notches cut from the wing portions, the head portion being shaped to cover a top surface of the dishwasher, the tail portion being adapted to cover a portion of the rear surface of the dishwasher, and the wing portions being adapted to cover the right and left sides of the dishwasher and having wing tips adapted to be folded around the rear edges of the dishwasher and to be overlapped on the rear surface of the dishwasher.
    Type: Application
    Filed: August 3, 2005
    Publication date: February 23, 2006
    Inventors: Rowland Griffin, John Field, Michael McCarthy
  • Sound insulation for dishwashers
    Publication number: 20040206377
    Abstract: Sound insulation core material is made by melt-blowing a polypropylene resin having a hydroxystearamide wax additive to produce a fibrous mass having improved loft. The core material is encased between outer layers of spun-bond polyethylene fibers by longitudinal seams and transverse seams to form a product suitable for use in dishwashers.
    Type: Application
    Filed: April 16, 2003
    Publication date: October 21, 2004
    Applicant: Monadnock Non-wovens LLC
    Inventors: Rowland Griffin, John P. Field
  • Electrochemical cell
    Patent number: 5176968
    Abstract: The invention relates to a non-aqueous electrochemical cell having spirally wound electrodes and a separator having a basis weight of at least 20 g/m.sup.2 and comprising melt blown non-woven polypropylene fibers.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: January 5, 1993
    Assignee: Duracell Inc.
    Inventors: Jane A. Blasi, Richard M. Mank, Rowland A. Griffin
  • Separator for electrochemical cells
    Patent number: 4794057
    Abstract: This invention relates to a separator for non-aqueous electrochemical cells and in particular lithium/manganese dioxide cells. It has been discovered that a polypropylene microporous film having a thickness greater than one mil and voids greater than 50% by volume, has beneficial properties without the concomitant problems generally associated with separators having open structures.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: December 27, 1988
    Assignee: Duracell Inc.
    Inventor: Rowland A. Griffin
  • Gelling agent for alkaline cells
    Patent number: 4435488
    Abstract: A novel gelling agent comprised of cross-linked CMC (carboxymethyl cellulose) is utilized as a gelling agent in the anode of alkaline electrochemical cells with improved cell performance and reduced cell gassing as compared to the commonly utilized non cross-linked CMC.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: March 6, 1984
    Assignee: Duracell Inc.
    Inventors: William S. Bahary, Rowland A. Griffin