Inventor

Chanchai Poonpol

Inventor

San Diego, CA, US

Overview

5→

Patents

1993–2004

Patent span

Electricity

Primary field (CPC H)

Patents· 5 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 communication38%

H04BTransmission25%

H04MTelephonic communication13%

H04WWireless communication networks13%

Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use13%

PatentTitleYear

6,731,752'Method and circuit for echo-cancellation in two-way communications'2004 6,434,395'Portable communications and data terminal having multiple modes of operation'2002 6,175,599'Method and apparatus for transmitting and receiving digital data over a bandpass channel'2001 5,838,727'Method and apparatus for transmitting and receiving digital data over a bandpass channel'1998 5,257,265'Method and apparatus for reducing multipath distortion'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993Patents assigned to PACIFIC COMMUNICATIONS (1)· patent assignee history

1993–2004Based in San Diego, CA, US· patent location history

1998–2001Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (2)· patent assignee history

2002Patents assigned to PACIFIC COMM SCIENCES INC (1)· patent assignee history

2004Patents assigned to VIADUX INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SCHLUMBERGER TECHNOLOGY CORP	2	1998–2001
PACIFIC COMM SCIENCES INC	1	2002
PACIFIC COMMUNICATIONS	1	1993
VIADUX INC	1	2004

Locations

Location	Patents	Span
San Diego, California, US	5	1993–2004