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:
Sep. 29, 2009
Filed:
Jul. 05, 2004
Hirohide Nakata, Fuchu, JP;
Ryoko Yanagisawa, Fujisawa, JP;
Masahiro Harada, Tokyo, JP;
Takeshi Matsushita, Saitama, JP;
Makoto Sugiyama, Ryuugasaki, JP;
Hirohide Nakata, Fuchu, JP;
Ryoko Yanagisawa, Fujisawa, JP;
Masahiro Harada, Tokyo, JP;
Takeshi Matsushita, Saitama, JP;
Makoto Sugiyama, Ryuugasaki, JP;
Kimoto Co., Ltd., , JP;
Abstract
A transmission screen having a writable and erasable surface for one side is provided. This transmission screen is constructed so that the writable and erasable surface should have a specular gloss (JIS K5600-4-7:1999) of 70 to 135%, the transmission screen as a whole should have a haze (JIS K7136:2000) of 80% or more, and the surface opposite to the writable and erasable surface should have a specular gloss (JIS K5600-4-7:1999) of 10% or less. With this transmission screen, writing with a marker for white boards and erasing can be easily done while seeing images projected on the transmission screen, and the images from a projector do not become hard to see due to projection of the images on the body of a writer.