Peter Graf — 19 Patents at Chevron

Peter Graf has been granted 19 US patents while listed as an inventor at Chevron. The first was granted in 1983 and the most recent in October 2025. Peter Graf ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list Peter Graf in Waldshut-Tiengen, CA, DE.

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12436473	Optical element, optical system, lithography system, and method for operating an optical element	Johannes Kimling, Norbert Wabra, Sonja Schneider, Reimar Finken	2025-10-07
11415894	Projection exposure system for semiconductor lithography having an optical arrangement	Judith Fingerhuth, Norbert Wabra, Sonja Schneider, Ferdinand Djuric-Rissner, Reimar Finken	2022-08-16
9587893	Air introduction system and method for cooling towers	Pery Bogh, Klemens Fisch	2017-03-07
9435213	Method for improving the sealing on rotor arrangements	Helmar Wunderle, Stefan Schlechtriem, Silvio Glaser, Beat Von Arx	2016-09-06	$17,133,000
7575625	Method for separating solids from gas scrubbers	Frank Seida	2009-08-18
7350360	Annular combustor for a gas turbine	Stefan Tschirren, Helmar Wunderle	2008-04-01
7331182	Combustion chamber for a gas turbine	Stefan Tschirren, Helmar Wunderle	2008-02-19
7055331	Burner arrangement for the annular combustion chamber of a gas turbine	Stefan Tschirren, Helmar Wunderle	2006-06-06
6916003	Directional-control valve	Herbert Reder, Rainer Imhof, Hans-Georg Schubert, Frank Schwab	2005-07-12
6308407	Method of manufacturing a plurality of steam turbines for use in various applications	Maurus Herzog, Pierre Meylan, Harald Romer	2001-10-30	$378,000
6203271	Shrink ring for turbine with bleeding	Tihomir Stojkovic'	2001-03-20
5577378	Gas turbine group with reheat combustor	Rolf Althaus, Franz Farkas, Fredy Hausermann, Erhard Kreis	1996-11-26	$267,000
5454220	Method of operating gas turbine group with reheat combustor	Rolf Althaus, Franz Farkas, Fredy Hausermann, Erhard Kreis	1995-10-03	$377,000
5114483	Open-graded asphalt	—	1992-05-19	$49,532,000
4985079	Open-graded asphalt emulsion mixes	Steven J. Agazzi, Eugene J. Vanderzanden	1991-01-15	$103,540,000
4822427	Open-grade asphalt emulsion mixes	Steven J. Agazzi, Eugene J. Vanderzanden	1989-04-18	$38,624,000
4762565	Open-graded asphalt	—	1988-08-09	$50,698,000
4523957	Open-graded asphalt emulsion mixes	Judson E. Goodrich	1985-06-18	$16,037,000
4423088	Method for depositing asphalt	Judson E. Goodrich	1983-12-27	$15,326,000

Peter Graf — 19 Patents

Issued Patents All Time

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