Inventor

Shigekazu Yamauchi

Inventor

Sagamihara, JP

Overview

9→

Patents

1987–1998

Patent span

Physics

Primary field (CPC G)

Patents· 9 as inventor

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

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein23%

F02DControlling combustion engines14%

G01NInvestigating or analysing materials by determining their chemical or physical properties14%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts9%

B29CShaping or joining of plastics5%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form5%

F02BInternal-combustion piston engines5%

F02MSupplying combustion engines in general with combustible mixtures or constituents thereof5%

F05CIndexing scheme relating to materials, material properties or material characteristics for machines, engines or pumps other than non-positive-displacement machines or engines5%

G02BOptical elements, systems or apparatus5%

PatentTitleYear

5,813,380'Suction control device for multiple cylinder internal combustion engine'1998 5,314,771'Method of manufacturing color-filter-fitted board for liquid crystal display'1994 5,271,816'Oxygen sensor'1993 5,206,750'Method of forming a color filter for a liquid crystal color display apparatus'1993 5,179,456'Optical birefringence compensator'1993 4,961,341'Testing device for an oxygen sensor'1990 4,837,058'Liquid crystal cell'1989 4,834,051'Oxygen sensor and an air-fuel ratio control apparatus of an internal combustion engine using the same'1989 4,684,218'Liquid crystal color display device having two-layered electrode with pinhole connections'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1994Patents assigned to STANLEY ELECTRIC CO LTD (5)· patent assignee history

1987–1994Based in Sagamihara, JP· patent location history

1989–1998Patents assigned to MITSUBISHI MOTORS CORP (4)· patent assignee history

1989–1993Based in Nagaokakyo, JP· patent location history

1989–1998Based in Tokyo, JP· patent location history

1998Patents assigned to MIKUNI KOGYO KK (1)· patent assignee history

1998Patents assigned to TOKYO ROKI CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
STANLEY ELECTRIC CO LTD	5	1987–1994
MITSUBISHI MOTORS CORP	4	1989–1998
MIKUNI KOGYO KK	1	1998
TOKYO ROKI CORP	1	1998

Locations

Location	Patents	Span
Sagamihara, JP	4	1987–1994
Nagaokakyo, JP	3	1989–1993
Tokyo, JP	2	1989–1998