Inventor
Katsuji Yamaguchi
Inventor
Kawasaki, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Bprimary
H04BTransmission27%
H04JMultiplex communication18%
B29CShaping or joining of plastics9%
B60JWindows, windscreens, non-fixed roofs, doors, or similar devices for vehicles9%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for9%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
Y10TTechnical subjects covered by former us classification9%
PatentTitleYear
8,326,144'Transmission path monitoring method and device'20127,657,176'Method, apparatus, and system for evaluating faulty point in multi-stage optical amplifying and repeating transmission line'20107,280,763'Terminal apparatus and controlling method for optical output power'20074,250,596'Fastening system for securing a trim-fixing device to a substrate'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to NIFCO INC (1)· patent assignee history
1981Based in Hiratsuka, JP· patent location history
2007–2012Patents assigned to FUJITSU LTD (3)· patent assignee history
2007–2010Based in Kawasaki, JP· patent location history
2012Patents assigned to YAMAGUCHI KATSUJI (1)· patent assignee history
2012Patents assigned to YOSHIMURA JUNICHI (1)· patent assignee history
2012Based in Fujisawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJITSU LTD | 3 | 2007–2012 |
| NIFCO INC | 1 | 1981 |
| YAMAGUCHI KATSUJIself | 1 | 2012 |
| YOSHIMURA JUNICHI | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kawasaki, JP | 2 | 2007–2010 |
| Fujisawa, JP | 1 | 2012 |
| Hiratsuka, JP | 1 | 1981 |