Inventor

Issei Shinmura

Inventor

Kashiwa, JP

Overview

2003–2012

Patent span

Physics

Primary field (CPC G)

Patents· 10 as inventor

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

G03Gprimary

G03GElectrography71%

C01GCompounds containing metals not covered by subclasses c01d or c01f7%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds7%

C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties7%

Y10TTechnical subjects covered by former us classification7%

PatentTitleYear

8,247,148'Resin-coated ferrite carrier for electrophotographic developer and electrophotographic developer using the resin-coated ferrite carrier'2012 7,964,330'Electrophotographic resin-coated ferrite carrier, method for producing the same, and electrophotographic developer'2011 7,897,317'Method for producing core material of electrophotographic ferrite carrier and resin-coated ferrite carrier'2011 7,879,522'Carrier core material for electrophotographic developer, carrier and electrophotographic developer using the carrier'2011 7,824,833'Resin-coated ferrite carrier for electrophotographic developer, its production method, and electrophotographic developer using the resin-coated ferrite carrier'2010 7,553,597'Carrier core material, coated carrier, and two-component developing agent for electrophotography'2009 7,442,483'Ferrite carrier for electrophotographic developer and method for preparing the same, and electrophotographic developer using the same'2008 7,183,033'Carrier core material, coated carrier, two-component developing agent for electrophotography, and image forming method'2007 7,144,670'Carrier for electrophotographic developer and process of producing the same'2006 6,582,870'Carrier for electrophotographic developer and electrophotographic developer containing the same'2003

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003–2012Patents assigned to POWDERTECH CO LTD (9)· patent assignee history

2003–2011Based in Kashiwa, JP· patent location history

2011Patents assigned to POWERTECH CO LTD (1)· patent assignee history

2011–2012Based in Ibaraki, JP· patent location history

2011Based in Toride, JP· patent location history

2012Patents assigned to KAYAMOTO KANAO (1)· patent assignee history

2012Patents assigned to SHINMURA ISSEI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
POWDERTECH CO LTD	9	2003–2012
KAYAMOTO KANAO	1	2012
POWERTECH CO LTD	1	2011
SHINMURA ISSEIself	1	2012

Locations

Location	Patents	Span
Kashiwa, JP	7	2003–2011
Ibaraki, JP	2	2011–2012
Toride, JP	1	2011