Inventor
Makoto Iikawa
Inventor
Saitama, JP
Overview
Patents· 36 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus49%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them23%
F16DCouplings for transmitting rotation6%
H04NPictorial communication, e.g. television6%
Y10TTechnical subjects covered by former us classification6%
B29CShaping or joining of plastics2%
B29DProducing particular articles from plastics or from substances in a plastic state2%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges2%
F16HGearing2%
G01DMeasuring not specially adapted for a specific variable2%
PatentTitleYear
10,942,343Optical system and imaging apparatus202110,852,503Joint structure20209,310,669'Camera body, lens barrel and lens-interchangeable camera'20169,197,801'Camera body, lens barrel and lens-interchangeable camera'20159,134,590'Camera body'20159,103,967'Gear mechanism'20158,976,460'Varifocal lens barrel'20158,508,873'Water-resistant structure of a lens barrel'20137,756,405'Interchangeable lens, and a camera system including an interchangeable lens'20107,639,439'Lens alignment apparatus'20097,468,848'Fixing method for resin lens'20087,454,135'Camera system incorporating a seamless lens-drive switching mechanism'20087,408,726'Lens alignment apparatus'20087,213,693'Rotational transfer mechanism'20077,201,262'One-way rotational transfer mechanism'20077,102,837'One-way rotational transfer mechanism, and a lens barrel incorporating the same'20067,099,576'Lens barrel incorporating a one-way rotational transfer mechanism'20067,004,672'Bayonet coupling for axially mounting one of two relatively rotatable ring-shaped members on the other'20066,888,690'Hot crimping structure and method for fixing a lens to a lens frame, and hot crimping tool therefor'20056,876,499'Cam mechanism'20056,867,926'Cam rib support structure'20056,829,103'Lens barrel'20046,778,332'Soft focus lens barrel'20046,747,807'Lens barrel'20046,631,035'Varifocal lens barrel and a lens drive mechanism'20036,594,088'Method for molding cam ring with convex cams, molding die assembly, and molded cam ring'20036,552,671'Brush encoder with resilient contact strips'20036,388,826'Device for adjusting the eccentricity of a lens in a frame'20026,341,902'Photographic lens recognition system for a camera body'20026,333,825'Vari-focal lens'20016,269,227'Lens hood'20016,236,523'Floating lens barrel, lens barrel, and a common lens barrel system'20016,178,295'Lens movement control device'20016,118,601'Floating lens barrel, lens barrel, and a common lens barrel system'20005,969,889'Lens barrel'19995,884,110'Automatic diaphragm apparatus for lens'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2002Patents assigned to ASAHI OPTICAL CO LTD (8)· patent assignee history
1999–2015Based in Saitama, JP· patent location history
1999–2021Based in Tokyo, JP· patent location history
2003–2007Patents assigned to PENTAX CORP (14)· patent assignee history
2008–2010Patents assigned to HOYA CORP (5)· patent assignee history
2013–2021Patents assigned to IIKAWA MAKOTO (7)· patent assignee history
2013–2016Patents assigned to KOGURE YUJI (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PENTAX CORP | 14 | 2003–2007 |
| ASAHI OPTICAL CO LTD | 8 | 1999–2002 |
| IIKAWA MAKOTOself | 7 | 2013–2021 |
| HOYA CORP | 5 | 2008–2010 |
| KOGURE YUJI | 4 | 2013–2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Saitama, JP | 30 | 1999–2015 |
| Tokyo, JP | 6 | 1999–2021 |