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:
Jul. 24, 2001
Filed:
Nov. 17, 1998
Katsuyuki Kono, Takatsuki, JP;
Yuko Watanabe, Takatsuki, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
The present invention provides a porous film obtained by coagulating polymer particles in an emulsion into the form of a film while maintaining their particle shape. The spaces between particles are left as pores, and as a result, the porous film has a plurality of thus-formed pores. By controlling the polymer particle diameter, the distribution of the particle diameter, and the solid concentration of the emulsion, the size of the pores of the film, the rate of pore area and the density of pores can be properly determined. The porous film is suitable for various applications including a recording subject for ink-jet printing, other recording subjects, films used in various industries, and the like.