Inventor

Tomoaki Nagai

Inventor

Tokyo, JP

Overview

1988–2021

Patent span

Performing operations

Primary field (CPC B)

Patents· 45 as inventor

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

B41Mprimary

B41MPrinting, duplicating, marking, or copying processes37%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%

G11BInformation storage based on relative movement between record carrier and transducer12%

G03CPhotosensitive materials for photographic purposes6%

C07DHeterocyclic compounds5%

C07CAcyclic or carbocyclic compounds4%

B41CProcesses for the manufacture or reproduction of printing surfaces3%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments3%

Y10TTechnical subjects covered by former us classification3%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients2%

PatentTitleYear

10,960,598Imprinting method and imprinting apparatus2021 6,303,540'Thermally sensitive recording medium'2001 6,284,706'Thermally sensitive recording medium'2001 6,284,707'Thermally sensitive recording medium'2001 6,258,747'Thermally sensitive recording medium'2001 6,093,678'Spontaneously color changing type thermal sensitive recording medium'2000 5,919,928'Phenanthridine derivatives and metal complexes thereof used for transparent recording medium or optical recording medium'1999 5,892,042'Acridine derivative metal complexes used for transparent recording medium or optical recording medium'1999 5,811,368'Thermal sensitive recording medium'1998 5,811,369'Thermal recording medium'1998 5,792,863'Acridine derivatives and metal complexes thereof used for transparent recording medium or optical recording medium'1998 5,753,586'Thermal sensitive recording sheet'1998 5,733,843'Thermal sensitive recording sheet'1998 5,710,094'Reversible multi-color thermal recording medium'1998 5,707,778'Optical recording medium'1998 5,665,675'Aminobenzenesulfonamide derivative and recording medium using the same'1997 5,661,100'Urea (thiourea) derivative and thermal recording sheet using the same'1997 5,612,279'Optical recording sheet'1997 5,494,882'Thermal recording material'1996 5,482,913'Recording sheet'1996 5,470,816'Thermal recording sheet'1995 5,434,119'Transparent recording medium'1995 5,393,443'Hard-coating, heat-absorbing composition and heat-shielding substance'1995 5,391,666'Light-responsive plate containing the metal salt of a phthalic acid derivative'1995 5,369,199'Light-responsive plate containing metal salt of a phthalic acid derivative'1994 5,354,514'Near infrared absorbing composition and material and product containing same'1994 5,273,800'Optical recording medium'1993 5,236,633'Plate and sheet comprising near infrared absorbing composition'1993 5,234,797'Optical recording medium'1993 5,202,450'Phthalic acid derivative metal salt and shading and light-responsive plate containing the metal salt'1993 5,200,947'Optical recording medium, optical recording method, and optical recording device used in method'1993 5,178,990'Method of identifying output, main wavelength, etc., of light'1993 5,100,711'Optical recording medium optical recording method, and optical recording device used in method'1992 5,075,146'Optical recording medium'1991 5,061,536'Optical recording medium'1991 4,910,185'Heat-sensitive recording material'1990 4,898,902'Binder composition for injection molding'1990 4,868,151'Heat-sensitive recording material'1989 4,861,749'Heat-sensitive recording material'1989 4,853,362'Heat-sensitive recording sheet'1989 4,853,363'Heat-sensitive recording material'1989 4,853,361'Heat- and light-sensitive recording material'1989 4,849,396'Heat-sensitive recording material'1989 4,729,983'Heat-sensitive recording material'1988 4,721,701'Thermosensitive recording sheet'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2001Patents assigned to JUJO PAPER CO LTD (41)· patent assignee history

1988–2021Based in Tokyo, JP· patent location history

1990Patents assigned to ADEKA FINE CHEMICAL CO LTD (1)· patent assignee history

1990Patents assigned to ASAHI DENKA KOGYO KK (1)· patent assignee history

1991–2001Based in Kita-ku, JP· patent location history

1997Patents assigned to NIPPON PAPER IND LTD (1)· patent assignee history

1997–1998Based in Shinjuku-ku, JP· patent location history

1998Based in Shijuku-ku, JP· patent location history

2021Patents assigned to DAINIPPON PRINTING CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
JUJO PAPER CO LTD	41	1988–2001
ADEKA FINE CHEMICAL CO LTD	1	1990
ASAHI DENKA KOGYO KK	1	1990
DAINIPPON PRINTING CO LTD	1	2021
NIPPON PAPER IND LTD	1	1997

Locations

Location	Patents	Span
Tokyo, JP	34	1988–2021
Kita-ku, JP	8	1991–2001
Shinjuku-ku, JP	2	1997–1998
Shijuku-ku, JP	1	1998