Patent Assignment
Reel/Frame 008866/0763
Assignment of Assignor's Interest
Recorded: 1997-10-22
Pages: 3
Assignor
MARUYAMA, KOICHI
Executed: 1997-10-22
Assignee
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
36-9, MAENOCHO 2-CHOME, ITABASHI-KU, TOKYO, 174, JAPAN
Covered Property
(1)
Method for Designing Diffractive Lenses
Patent:
5,978,140 →
Application:
08/956,197 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name
Sep 10, 2015
From: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
To: PENTAX CORPORATION
Reel/Frame 036527/0869 →
Merger
Sep 10, 2015
From: PENTAX CORPORATION
To: HOYA CORPORATION
Reel/Frame 036528/0282 →
Assignment of Assignor's Interest
Feb 29, 2016
From: HOYA CORPORATION
To: KONICA MINOLTA, INC.
Reel/Frame 037851/0237 →