The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 1981
Filed:
Oct. 09, 1973
Applicant:
Inventor:
John T Gresham, Somerset, NJ (US);
Assignee:
Avtex Fibers Inc., Valley Forge, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
106 1819 ; 106 182 ; 260 / ; 260 / ; 260 / ; 428921 ;
Abstract
Flame-retardant polyester fibers containing 5 to 20% by weight of 3,9-diphenyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane-3,9-dioxide , a novel compound, as the sole frame-retardant additive or a two-component additive comprising the aforesaid spirophosphonate in admixture with 20 to 80% of certain polychlorinated or polybrominated diaryl compounds.