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. 03, 1991
Filed:
May. 29, 1990
Applicant:
Inventors:
Ichizo Ogawa, Shizuoka, JP;
Yoshihisa Warashina, Shizuoka, JP;
Yoshihiko Mizushima, Shizuoka, JP;
Koji Ichie, Shizuoka, JP;
Morio Takeichi, Shizuoka, JP;
Akira Takeshima, Shizuoka, JP;
Assignee:
Hamamatsu Photonics K.K., Shizuoka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01C / ;
U.S. Cl.
CPC ...
356-5 ; 342127 ; 342134 ;
Abstract
Times t.sub.1 and t.sub.2 required for two electromagnetic waves having different wavelengths to propagate from a reference point to a target point are measured. Necessary meteorological conditions along the path are also measured to determine refractivities N.sub.1 and N.sub.2 of the path for the two electromagnetic waves as: