Inventor

Nobuhiro Nakayama

Inventor

Susono, JP

Overview

1986–1994

Patent span

Physics

Primary field (CPC G)

Patents· 12 as inventor

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

G03Gprimary

G03GElectrography67%

Y10TTechnical subjects covered by former us classification17%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments6%

PatentTitleYear

5,344,732'Multi-color electrophotographic image formation method'1994 5,270,783'Image forming equipment having improved toner sensing'1993 5,227,842'Electrophotographic image forming apparatus which controls developer bias based on image irregularity'1993 5,061,588'Dry type toner for electrophotography'1991 4,980,258'Dry type developer for electrophotography'1990 4,945,022'Triboelectric charge application member for toner comprising copolymer of fluoro-olefin monomer and unsaturated silicon monomer'1990 4,933,250'Magenta color toner for developing latent electrostatic images in color electrophotography'1990 4,927,728'Carrier particles for use in a two-component dry-type developer'1990 4,908,290'Toner for developing latent electrostatic images'1990 4,841,331'Triboelectric charge application member for toner'1989 4,672,016'Carrier particles for use in a developer for developing latent electrostatic images comprise organic tin compound, silicone resin and conductive material'1987 4,584,254'Silicone resin coated carrier particles for use in a two-component dry-type developer'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1994Patents assigned to RICOH KK (12)· patent assignee history

1986–1987Based in Numazu, JP· patent location history

1989–1994Based in Susono, JP· patent location history

1990Based in Shizuoka, JP· patent location history

1991Patents assigned to MITSUI PETROCHEMICAL IND (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	12	1986–1994
MITSUI PETROCHEMICAL IND	1	1991

Locations

Location	Patents	Span
Susono, JP	9	1989–1994
Numazu, JP	2	1986–1987
Shizuoka, JP	1	1990