Inventor

Yoshinao Iwamoto

Inventor

Fujimi, JP

Overview

22→

Patents

1976–2019

Patent span

Physics

Primary field (CPC G)

Patents· 22 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H02Gprimary

H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines16%

H04BTransmission16%

G01VGeophysics13%

G02BOptical elements, systems or apparatus13%

E02FDredging8%

G05DSystems for controlling or regulating non-electric variables8%

Y02ATechnologies for adaptation to climate change8%

A61BDiagnosis3%

B26BHand-held cutting tools not otherwise provided for3%

C03CChemical composition of glasses, glazes or vitreous enamels3%

PatentTitleYear

10,327,799Scissors2019 9,506,143'Protective film and method for producing same'2016 5,048,922'Optical fiber cable'1991 4,972,513'Multi-point optical amplification repeating system'1990 4,933,990'Optical privacy communication system in two-way optical transmission system'1990 4,923,291'Optical amplification'1990 4,911,522'Core alignment system for optical fibers'1990 4,899,043'Fault monitoring system for optical fiber communication systems'1990 4,764,980'System for measuring delay time variation in optical fiber digital communication system'1988 4,747,094'Signal coupling system for optical repeater system'1988 4,678,371'Burying device for submarine cables and method for guiding the same'1987 4,641,915'Rotary joint for optical fibers'1987 4,637,686'Optical fiber with light reflecting particles dispersed through buffer layers to dissipate leaky cladding modes'1987 4,625,172'Apparatus for supplying AC current to an underwater cable'1986 4,544,233'Underwater optical fiber connector'1985 4,540,942'Alternating current induction method using an annular magnetic coupling body for detecting the position of a buried submarine cable'1985 4,537,530'Marine cable burying method and device therefor'1985 4,492,492'Guiding method for cable burying device and a device therefor'1985 4,438,401'System for detecting a cable buried under the seabed'1984 4,384,808'Under-water cable burying device'1983 4,317,079'Buried cable locating system'1982 3,983,475'Frequency selective detecting system for detecting alternating magnetic fields'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1991Patents assigned to KOKUSAI DENSHIN DENWA CO LTD (20)· patent assignee history

1976–1991Based in Fujimi, JP· patent location history

1988–1990Based in Saitama, JP· patent location history

1990Patents assigned to DUO FAST CORP (1)· patent assignee history

1990Based in Wakayama, JP· patent location history

2016–2019Patents assigned to IMOTT INC (2)· patent assignee history

2016Patents assigned to IWAMOTO YOSHINAO (1)· patent assignee history

2016Based in Hujimi, JP· patent location history

2019Patents assigned to JAPAN ORGANIZATION OF OCCUPATIONAL HEALTH AND SAFETY (1)· patent assignee history

2019Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KOKUSAI DENSHIN DENWA CO LTD	20	1976–1991
IMOTT INC	2	2016–2019
DUO FAST CORP	1	1990
IWAMOTO YOSHINAOself	1	2016
JAPAN ORGANIZATION OF OCCUPATIONAL HEALTH AND SAFETY	1	2019

Locations

Location	Patents	Span
Fujimi, JP	11	1976–1991
Wakayama, JP	3	1990
Saitama, JP	3	1988–1990
Yokohama, JP	1	2019
Hujimi, JP	1	2016