Inventor

Tetsuhiko Hirata

Inventor

Yokohama, JP

Overview

16→

Patents

1991–2011

Patent span

Electricity

Primary field (CPC H)

Patents· 16 as inventor

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

H04Lprimary

H04LTransmission of digital information, e.g. telegraphic communication41%

G06FElectric digital data processing21%

H04WWireless communication networks21%

G01SRadio direction-finding3%

H04JMultiplex communication3%

H04NPictorial communication, e.g. television3%

Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

PatentTitleYear

8,077,719'Packet switching apparatus'2011 7,404,008'Address translator and method for management of address translation rules'2008 7,173,932'Packet switching apparatus'2007 7,123,599'Mobile communication system'2006 7,085,579'Mobile communication systems, mobile stations, base station controllers and packet data service nodes'2006 7,009,950'Mobile IP network system and connection switching method'2006 6,701,132'Mobile communication system, mobile station, and base station that calculates distance from mobile station'2004 5,748,893'Network interface apparatus'1998 5,727,149'Network interface apparatus and data transmission control method thereof'1998 5,706,430'Method and system for sequentially broadcasting data according to pre-assigned time slots with and without the reception of a synchronization packet'1998 5,678,060'System for executing high speed communication protocol processing by predicting protocol header of next frame utilizing successive analysis of protocol header until successful header retrieval'1997 5,623,606'Communication control method and apparatus for performing high speed transfer of data by controlling transfer starting times'1997 5,345,410'Arithmetic-logic unit with modulo addition/substraction function and microprocessor using the same'1994 5,303,344'Protocol processing apparatus for use in interfacing network connected computer systems utilizing separate paths for control information and data transfer'1994 5,150,365'Communication system for coexistent base band and broad band signals'1992 5,056,058'Communication protocol for predicting communication frame type in high-speed processing system'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2011Patents assigned to HITACHI LTD (16)· patent assignee history

1991–1994Based in Machida, JP· patent location history

1992Based in Kawasaki, JP· patent location history

1997–2011Based in Yokohama, JP· patent location history

2011Patents assigned to HIRATA TETSUHIKO (1)· patent assignee history

2011Patents assigned to MIKI KAZUHO (1)· patent assignee history

2011Patents assigned to MIYATA HIROAKI (1)· patent assignee history

2011Patents assigned to SAKAMOTO KEN ICHI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	16	1991–2011
HIRATA TETSUHIKOself	1	2011
MIKI KAZUHO	1	2011
MIYATA HIROAKI	1	2011
SAKAMOTO KEN ICHI	1	2011

Locations

Location	Patents	Span
Yokohama, JP	12	1997–2011
Machida, JP	3	1991–1994
Kawasaki, JP	1	1992