Inventor

Ulrich E. Hess

Inventor

Corvallis, OR, US

Overview

19→

Patents

1988–2009

Patent span

Performing operations

Primary field (CPC B)

Patents· 19 as inventor

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

B41Jprimary

B41JTypewriters58%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations8%

C07CAcyclic or carbocyclic compounds8%

Y10TTechnical subjects covered by former us classification8%

C06BExplosives or thermic compositions4%

C07DHeterocyclic compounds4%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium4%

F01PCooling of machines or engines in general4%

F41BWeapons for projecting missiles without use of explosive or combustible propellant charge4%

PatentTitleYear

7,517,060'Fluid-ejection devices and a deposition method for layers thereof'2009 7,213,589'Compressed-gas gun'2007 7,025,894'Fluid-ejection devices and a deposition method for layers thereof'2006 6,974,548'Printhead having a thin film membrane with a floating section'2005 6,772,716'Method and system for controlling a cooling system of an internal-combustion engine'2004 6,626,523'Printhead having a thin film membrane with a floating section'2003 6,485,128'Ink jet pen with a heater element having a contoured surface'2002 6,365,611'Pentaerythrite derivatives, the production and use thereof and intermediate products for the synthesis of the same'2002 6,273,555'High efficiency ink delivery printhead having improved thermal characteristics'2001 6,209,991'Transition metal carbide films for applications in ink jet printheads'2001 6,180,664'Pentaerythritol derivatives, their production and use and intermediates for their synthesis'2001 5,808,640'Special geometry ink jet resistor for high dpi/high frequency structures'1998 5,681,764'Method for forming a bipolar integrated ink jet printhead driver'1997 5,635,966'Edge feed ink delivery thermal inkjet printhead structure and method of fabrication'1997 5,635,968'Thermal inkjet printer printhead with offset heater resistors'1997 5,598,189'Bipolar integrated ink jet printhead driver'1997 5,159,353'Thermal inkjet printhead structure and method for making the same'1992 5,122,812'Thermal inkjet printhead having driver circuitry thereon and method for making the same'1992 4,719,477'Integrated thermal ink jet printhead and method of manufacture'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2002Patents assigned to HEWLETT PACKARD CO (11)· patent assignee history

1988–2009Based in Corvallis, OR, US· patent location history

2001–2002Patents assigned to ISIS PHARMA GMBH (2)· patent assignee history

2001–2002Based in Berlin, DE· patent location history

2003–2009Patents assigned to HEWLETT PACKARD DEVELOPMENT CO (4)· patent assignee history

2004Patents assigned to BAYERISCHE MOTOREN WERKE AG (1)· patent assignee history

2004Based in Warngau, DE· patent location history

2007Patents assigned to HANS EICHNER GMBH & CO KG (1)· patent assignee history

2007Based in Bergheim, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HEWLETT PACKARD CO	11	1988–2002
HEWLETT PACKARD DEVELOPMENT CO	4	2003–2009
ISIS PHARMA GMBH	2	2001–2002
BAYERISCHE MOTOREN WERKE AG	1	2004
HANS EICHNER GMBH & CO KG	1	2007

Locations

Location	Patents	Span
Corvallis, OR, US	15	1988–2009
Berlin, DE	2	2001–2002
Bergheim, DE	1	2007
Warngau, DE	1	2004