Inventor

Yoshifumi Tomita

Inventor

Mobara, JP

Overview

44→

Patents

1976–2020

Patent span

Physics

Primary field (CPC G)

Patents· 44 as inventor

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

H01Jprimary

H01JElectric discharge tubes or discharge lamps37%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices25%

LOC128%

G02BOptical elements, systems or apparatus7%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%

C09KMaterials for miscellaneous applications, not provided for elsewhere3%

G01NInvestigating or analysing materials by determining their chemical or physical properties3%

G03CPhotosensitive materials for photographic purposes3%

B41MPrinting, duplicating, marking, or copying processes1%

C03CChemical composition of glasses, glazes or vitreous enamels1%

PatentTitleYear

D0874343Passenger car2020 D0805005'Automobile front grille'2017 D0803112'Front bumper for an automobile'2017 D0801859'Passenger car'2017 D0797605'Passenger car'2017 D0797604'Passenger car'2017 6,853,416'Liquid crystal display device'2005 6,040,887'Liquid crystal display device with wide viewing angle characteristics comprising high resistivity black matrix'2000 5,831,701'Liquid crystal display device with wide viewing angle characteristics comprising high resistivity black matrix'1998 5,817,421'Method for forming and anti-reflection film of a cathode-ray tube, an apparatus used for carrying out the method and a cathode-ray tube having the anti-reflection film'1998 5,742,118'Ultrafine particle film, process for producing the same, transparent plate and image display plate'1998 5,689,318'Color liquid crystal display device composed of color filter with a layer of three primary color array patterns fabricated by thermal dye transfer technology'1997 5,449,534'Method for forming an anti-reflection film of a cathode-ray tube, an apparatus used for carrying out the method and a cathode-ray tube having the anti-reflection film'1995 4,890,481'System for measuring foreign materials in liquid'1990 4,857,429'Process of improving optical contact of patternwise powdery coating layer and phosphor screen provided therefore'1989 4,855,200'Fluorescent screens of color picture tubes and manufacturing method therefor'1989 4,815,821'Face plate for display'1989 4,779,451'System for measuring foreign materials in liquid'1988 4,760,310'Cathode-ray tubes and coating materials therefor'1988 4,735,880'Photosensitive composition and pattern forming process using same'1988 RE032498'Method of manufacturing fluorescent screens of cathode ray tubes'1987 4,681,824'Method of manufacturing fluorescent screens of color picture tubes'1987 4,625,147'Index type color picture tube'1986 4,612,268'Method of forming phosphor pattern on fluorescent screen for color picture tubes with polymer coagulent'1986 4,542,038'Method of manufacturing cathode-ray tube'1985 4,537,851'Process of forming powder pattern using positive diazonium salt photoresist'1985 4,482,842'Curved tube type ultra high pressure mercury arc discharge lamp device'1984 4,469,766'Method of forming cathode-ray tube phosphor screen'1984 4,425,419'Photosensitive composition'1984 4,396,705'Pattern forming method and pattern forming apparatus using exposures in a liquid'1983 4,391,885'Method of manufacturing fluorescent screens of cathode ray tubes'1983 4,352,878'Photoresist composition'1982 4,331,752'Method of forming fluorescent screens of color picture tubes'1982 4,324,850'Method of forming a fluorescent screen for a color picture tube'1982 4,276,363'Process for forming phosphor screens with treated phosphors'1981 4,273,842'Process for forming patternwise coated powder layer'1981 4,267,204'Method of manufacturing striped phosphor screen for black matrix type color picture tube'1981 4,263,384'Method of forming fluorescent screens of color picture tubes'1981 4,254,197'Process of forming photoresist layer on a glass substrate'1981 4,205,255'Color cathode ray tube with reflective layers having apices centered between matrix windows'1980 4,099,973'Photo-sensitive bis-azide containing composition'1978 4,086,090'Formation of pattern using acrylamide-diacetoneacrylamide copolymer'1978 4,019,905'Method for forming fluorescent screen of color cathode ray tubes using filter layer'1977 3,967,985'Process for treating surfaces of a perforated mask'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2005Patents assigned to HITACHI LTD (37)· patent assignee history

1976–2005Based in Mobara, JP· patent location history

1988Patents assigned to HITACHI POWDERED METALS (1)· patent assignee history

2017–2020Patents assigned to SUBARU CORP (6)· patent assignee history

2017Patents assigned to FUJI HEAVY IND LTD (5)· patent assignee history

2017–2020Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	37	1976–2005
SUBARU CORP	6	2017–2020
FUJI HEAVY IND LTD	5	2017
HITACHI POWDERED METALS	1	1988

Locations

Location	Patents	Span
Mobara, JP	38	1976–2005
Tokyo, JP	6	2017–2020