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:
Apr. 26, 1977
Filed:
Jan. 13, 1975
Applicant:
Inventor:
Pronoy Kumar Chatterjee, Spotswood, NJ (US);
Assignee:
Personal Products Company, Milltown, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F / ; C08B / ; C08B / ;
U.S. Cl.
CPC ...
536 88 ; 8116 / ; 81164 ; 128285 ; 1282 / ; 128296 ; 536 87 ;
Abstract
Alkali metal and ammonium salts of crosslinked phosphonoalkyl cellulose are described which have a phosphorous content of from about 1.5% to about 4.0% by weight and a degree of crosslinking sufficient to make the modified cellulose salts essentially insoluble in aqueous media. These crosslinked phosphonoalkyl cellulose salts have significantly increased fluid absorption capacities as compared to unmodified cellulose and may be incorporated alone or in combination with other absorbent materials into catamenial tampons, sanitary napkins, diapers, and like absorbent devices.