Inventor

David H. Yen

Inventor

Palo Alto, CA, US

Overview

1976–2009

Patent span

Electricity

Primary field (CPC H)

Patents· 14 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 communication47%

H04JMultiplex communication18%

G01KMeasuring temperature12%

A61BDiagnosis6%

G11CStatic stores6%

H03MCoding6%

LOCD26%

PatentTitleYear

7,634,712'Techniques for generating cyclic redundancy check (CRC) values'2009 7,480,309'Port aggregation load balancing'2009 7,433,366'Offered load fairness in a stack'2008 7,031,333'Reduced pin count media independent interface'2006 6,934,293'Port aggregation load balancing'2005 6,667,975'Port aggregation load balancing'2003 6,631,138'Reduced pin-count 10Base-T MAC to transceiver interface'2003 6,473,424'Port aggregation load balancing'2002 6,078,532'Method and apparatus for improving performance of DRAM subsystems with SRAM overlays'2000 5,953,345'Reduced pin-count 10Base-T MAC to transceiver interface'1999 D0254629'Sphygmometer'1980 4,008,617'Electronic thermometer and method'1977 3,999,434'Temperature probe assembly and probe cover retainer'1976 3,978,848'Monitoring apparatus and method for blood pressure and heart rate'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1980Patents assigned to FILAC CORP (4)· patent assignee history

1976–1977Based in Sunnyvale, CA, US· patent location history

1980Based in Saratoga, CA, US· patent location history

1999–2006Patents assigned to CISCO TECH IND (7)· patent assignee history

1999–2009Based in Palo Alto, CA, US· patent location history

2008–2009Patents assigned to CISCO TECH INC (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CISCO TECH IND	7	1999–2006
FILAC CORP	4	1976–1980
CISCO TECH INC	3	2008–2009

Locations

Location	Patents	Span
Palo Alto, California, US	10	1999–2009
Sunnyvale, California, US	3	1976–1977
Saratoga, California, US	1	1980