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:
Jan. 18, 2005
Filed:
Mar. 21, 2002
Applicants:
Kohei Teramoto, Tokyo, JP;
Yasuo Sato, Tokyo, JP;
Yoshinori Sakakibara, Hiroshima, JP;
Inventors:
Assignees:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Nishinihon-Denken Inc., Hiroshima, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 2156 ; G03B 2160 ;
U.S. Cl.
CPC ...
Abstract
A screen unit includes a semipermeable screen sheet sandwiched between a first transparent sheet and a second transparent sheet. The semipermeable screen sheet transmits and reflects a projected image in a constant percentage. The first transparent sheet such as an acrylic sheet wider than the semipermeable screen sheet. The second transparent sheet is the same as the first transparent sheet.