Inventor
Yuzuru Doi
Inventor
Tokyo, JP
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Bprimary
A61BDiagnosis36%
G02BOptical elements, systems or apparatus16%
A61MDevices for introducing media into, or onto, the body12%
G01MTesting static or dynamic balance of machines or structures12%
B23KSoldering or unsoldering4%
B24BMachines, devices, or processes for grinding or polishing4%
F16KValves4%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light4%
H04BTransmission4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
6,033,359'Endoscopic length-measuring tool'20005,058,603'Length-measuring device and reference color display device for color tone adjustment for use in combination with endoscope'19914,971,034'Body cavity pressure adjusting device for endoscope and laser medical treatment apparatus including body cavity pressure adjusting device'19904,783,787'Laser beam generating device with multiple power levels'19884,730,885'Laser fiber connector'19884,716,288'Security device for detecting defects in transmitting fiber'19874,676,242'Laser knife'19874,543,477'Safety device for detecting trouble in optical transmission fibers'19854,461,283'Endoscopic laser coagulator'19844,421,382'Fiber retaining device for power laser'19834,385,832'Laser power transmitting optical fiber damage detecting device'19834,132,036'Adjusting structure in an aspheric lens grinding apparatus'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979–2000Patents assigned to ASAHI OPTICAL CO LTD (10)· patent assignee history
1979–1984Based in Niiza, JP· patent location history
1983Patents assigned to DOI YUZURU (1)· patent assignee history
1983Patents assigned to KAWAMURA NORIAKI (1)· patent assignee history
1983–2000Based in Saitama, JP· patent location history
1983Based in Saitama-shi, JP· patent location history
1984Patents assigned to MEDOS KENKYUSHO KK (1)· patent assignee history
1985–1991Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ASAHI OPTICAL CO LTD | 10 | 1979–2000 |
| DOI YUZURUself | 1 | 1983 |
| KAWAMURA NORIAKI | 1 | 1983 |
| MEDOS KENKYUSHO KK | 1 | 1984 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 7 | 1985–1991 |
| Saitama, JP | 2 | 1983–2000 |
| Niiza, JP | 2 | 1979–1984 |
| Saitama-shi, JP | 1 | 1983 |