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. 20, 1990
Filed:
Aug. 08, 1988
Atsushi Sonoda, Oita, JP;
Toshiharu Sakurai, Yokohama, JP;
Akinori Nakatsuru, Oita, JP;
Tetsuo Ito, Oita, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In a lead frame having a number of square dimples arranged on the rear side of a bed portion in a lattice form of a pitch t, each side of the square dimples is disposed to form a predetermined angle relative to either of X--Y axes of the lattice extending in lateral and longitudinal directions of the bed portion. The square dimples may be provided at entire intersecting points between two sets of lines extending in parallel with the X and Y axes, or every other intersecting points of the same, so that an equal pitch of t or 2t is maintained between the dimples arranged in X and Y directions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile