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:
Aug. 25, 2009
Filed:
Dec. 02, 2004
Applicants:
Tetsuya Uehara, Fujinomiya, JP;
Minoru Iwasaki, Fujinomiya, JP;
Inventors:
Tetsuya Uehara, Fujinomiya, JP;
Minoru Iwasaki, Fujinomiya, JP;
Assignee:
Daio Paper Corporation, Ehime, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21H 21/28 (2006.01); D21H 23/04 (2006.01); B31F 1/07 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention is directed to obtain a colored sanitary tissue paper giving a bright feeling in spite of modest color. The invention provides a colored sanitary tissue paper with a color difference between before and after dyeing of 15 or more in D value of Hunter's color difference formula defined in JIS Z 8730; D=(ΔL+Δa+Δb).
Uehara, Tetsuya. (2009). Colored sanitary tissue paper and production method thereof (U.S. Patent No. 7578903). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7578903
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile