Inventor

Yoshiko Ishii

Inventor

Tokyo, JP

Overview

8→

Patents

1981–2014

Patent span

Physics

Primary field (CPC G)

Patents· 8 as inventor

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

G03Gprimary

G03GElectrography42%

A61KPreparations for medical, dental or toiletry purposes8%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations8%

A61QSpecific use of cosmetics or similar toiletry preparations8%

C12NMicroorganisms or enzymes8%

C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture8%

G06FElectric digital data processing8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

PatentTitleYear

8,713,352'Method, system and program for securing redundancy in parallel computing system'2014 7,879,315'Agent for dissolving dental calculi and dental caries'2011 5,774,772'Toner cartridge having a toner stirring member'1998 5,638,159'Developing unit for an image forming apparatus and method of collecting bicomponent developer therefrom'1997 5,619,316'Image forming apparatus'1997 5,606,408'Image forming apparatus and cleaning device therefor'1997 5,442,430'Color image forming apparatus and cleaning device therefor'1995 4,284,722'Heat and acid-stable alpha-amylase enzymes and processes for producing the same'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to CPC INTERNATIONAL INC (1)· patent assignee history

1981–2014Based in Tokyo, JP· patent location history

1995–1998Patents assigned to RICOH KK (5)· patent assignee history

1997–1998Based in Tsukuba, JP· patent location history

2011Based in Kanagawa, JP· patent location history

2014Patents assigned to IBM (1)· patent assignee history

2014Patents assigned to ISHII YOSHIKO (1)· patent assignee history

2014Patents assigned to MATSUO NAOKI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	5	1995–1998
CPC INTERNATIONAL INC	1	1981
IBM	1	2014
ISHII YOSHIKOself	1	2014
MATSUO NAOKI	1	2014

Locations

Location	Patents	Span
Tokyo, JP	4	1981–2014
Tsukuba, JP	3	1997–1998
Kanagawa, JP	1	2011