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:
Mar. 25, 2003
Filed:
Aug. 17, 2001
Masumi Hyakutome, Tokyo-to, JP;
Minoru Ono, Minamiashigara, JP;
Other;
Abstract
The present invention provides a masking material and a photo-film unit which exhibit writability for any of the presently used writing materials including a ballpoint pen, an oily pen, an aqueous pen, a fountain pen and a pencil, are water-resistant, are free from blocking, and permit complete erasion of pencil writing with a rubber. A writability imparting layer comprising vinylpyrrolidone-vinyl acetate copolymer, an acrylic resin having a hydrophilic group, and powder is provided on a support film of a photo-film unit or a masking material.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile