Robert H. Allen — 56 Patents at Ethyl

Robert H. Allen has been granted 56 US patents while listed as an inventor at Ethyl. The first was granted in 1980 and the most recent in July 2025. Robert H. Allen ranks #44,020 of 4,157,543 US inventors in our database (top 1.1%). Patent records list Robert H. Allen in Sacramento, CA, US.

Issued Patents All Time

Showing 1–25 of 56 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12370828	Axle with outer sleeve and electric vehicles having axle with outer sleeve	—	2025-07-29
12330736	Single wheeled vehicle with increased travel range	—	2025-06-17
12319377	Single wheel vehicle rider presence detector	—	2025-06-03
9506604	Device and method for unfreezing frozen brake lines of tractor trailers	Lorenzo Gibson	2016-11-29
8888567	Skate sharpening squaring device and method of use	Robert Moon	2014-11-18
8827768	Skate sharpening holder, skate blade, and method of use	—	2014-09-09
7015367	Stabilization and use of propargyl bromide	Robert C. Herndon, Jr., Noel H. Brantley, Ronny W. Lin, Ralph W. Magin, Mahmood Sabahi	2006-03-21	$10,727,000
6825390	Stabilization and use of propargyl bromide	Robert C. Herndon, Jr., Noel H. Brantley, Hassan Y. Elnagar, Ronny W. Lin, Ralph W. Magin +1 more	2004-11-30	$6,569,000
6777375	Stabilization and use of propargyl bromide	Ralph W. Magin, Robert C. Herndon, Jr., Mahmood Sabahi, Noel H. Brantley, Hassan Y. Elnagar +1 more	2004-08-17	$4,585,000
6528496	Compositions treating, preventing or reducing elevated metabolic levels	Sally P. Stabler	2003-03-04
6297224	Method for treatment, preventing and reduction of elevated serum metabolite levels	Sally P. Stabler	2001-10-02
6267598	Touch activated audio module and sign	Frank LaPietra	2001-07-31
6207651	Method for treatment and prevention of deficiencies of vitamins B12, folic acid, and B6	Sally P. Stabler	2001-03-27
6096920	Preparation of carboxylic compounds and their derivatives	R. Carl Herndon, Jr., Kannappan Chockalingam, W. Dirk Klobucar, Gary D. Focht, Tse-Chong Wu +7 more	2000-08-01	$6,328,000
5877378	Process for selective utilization of alpha-olefins in mixtures containing non-alpha-olefins	Andrew D. Overstreet, Larry H. Nemec, Ronny W. Lin	1999-03-02
5874614	Sodium (S)-2-(6-methoxy-2-naphthyl)propionate monohydrate	Hao V. Phan, Richard A. Coats	1999-02-23	$3,232,000
5810597	Touch activated audio sign	Frank LaPietra	1998-09-22
5795873	Method for treatment and prevention of deficiencies of vitamins B.sub.12, folic acid and B.sub.6	—	1998-08-18
5571399	Electrostatic fluid filter and system	—	1996-11-05
5563126	Method for treatment and prevention of deficiencies of vitamins B.sub.12, folic acid, and B.sub.6	Sally P. Stabler	1996-10-08
5550303	High efficiency olefin displacement process	Ronny W. Lin, Andrew D. Overstreet	1996-08-27	$42,094,000
5457055	Diagnostic method for cobalamin deficiency	Sally P. Stabler, John Lindenbaum	1995-10-10
5438017	Assays for sulfhydryl amino acids and methylmalonic acid and their application to diagnosis of cobalamin deficiency	Sally P. Stabler	1995-08-01
5374560	Method for screening and distinguishing between cobalamin and folic acid deficiency based on assay for cystathionine and 2-methylcitric acid	Sally P. Stabler, John Lindenbaum	1994-12-20
5345688	Method and device for measuring squareness of ice skate blades	—	1994-09-13

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Robert H. Allen — 56 Patents

Issued Patents All Time

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