John H. Clark — 20 Patents at Amoco

John H. Clark has been granted 20 US patents while listed as an inventor at Amoco. The first was granted in 1980 and the most recent in November 2020. John H. Clark ranks #214,803 of 4,157,543 US inventors in our database (top 5.2%). Patent records list John H. Clark in Richmond, VA, US.

Patents per Year

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
10830929	Phase-transforming optical element formed by partial etching or by partial etching with reflow	Dmitri Iazikov, Thomas W. Mossberg, Christoph M. Greiner	2020-11-10
10539723	Phase-transforming optical reflector formed by partial etching or by partial etching with reflow	Dmitri Iazikov, Thomas W. Mossberg, Christoph M. Greiner	2020-01-21
9560952	Utensil cleaning device and method	—	2017-02-07
9200487	Alignment of downhole strings	Ian Draper, David C. Brands	2015-12-01	$13,168,000
8127846	Wiper plug perforating system	Freeman L. Hill, Randy L. Evans, Mark L. Sloan, William D. Myers, Joseph Gregory Barolak +1 more	2012-03-06	$10,819,000
6955217	Method and apparatus for a tubing conveyed perforating guns fire identification system using fiber optics	Jamie Oag	2005-10-18	$48,605,000
6895691	Apparatus and method for removing accumulated, dry seeds	Jerry Laramore	2005-05-24
6889450	Fluidized bed seed dryer	Jerry Laramore	2005-05-10
6564866	Method and apparatus for a tubing conveyed perforating guns fire identification system using enhanced marker material	Jamie Oag	2003-05-20	$16,854,000
5623251	Device to verify the identity of a fluid for proper selection of storage vessel	—	1997-04-22
5182759	Apparatus and method for pumping of a weakly absorbing lasant material	Douglas W. Anthon, Leo F. Johnson, Timothy J. Pier	1993-01-26	$46,984,000
5029335	Heat dissipating device for laser diodes	James H. Fisher, Edward J. Burke, James L. Bierschenk	1991-07-02	$16,618,000
4924471	Method for increasing the output power of a laser diode	James H. Fisher, Thomas Wolfram	1990-05-08	$25,208,000
4884276	Optical feedback control in the frequency conversion of laser diode radiation	George J. Dixon, Douglas W. Anthon	1989-11-28	$12,024,000
4879723	Intracavity generation of coherent optical radiation of optical mixing	George J. Dixon, Douglas W. Anthon	1989-11-07	$16,378,000
4879722	Generation of coherent optical radiation by optical mixing	George J. Dixon, Douglas W. Anthon	1989-11-07	$16,378,000
4731795	Solid state laser	Dennis L. Werth	1988-03-15	$19,622,000
4730335	Solid state laser and method of making	Dennis L. Werth	1988-03-08	$20,233,000
4287035	Method for producing rapid pH changes	Anthony J. Campillo, Stanley Shapiro, Kenneth Winn	1981-09-01
4212717	Separation of isotopes by photo-induced predissociation	C. Bradley Moore, Yehuda Haas, Paul L. Houston	1980-07-15

John H. Clark — 20 Patents

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