Roy E. Campbell — 12 Patents at Elcor

Roy E. Campbell has been granted 12 US patents while listed as an inventor at Elcor. The first was granted in 1981 and the most recent in March 2003. Roy E. Campbell ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Roy E. Campbell in Midland, TX, US.

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6526777	LNG production in cryogenic natural gas processing plants	John D. Wilkinson, Hank M. Hudson, Kyle T. Cuellar	2003-03-04	$2,968,000
6182469	Hydrocarbon gas processing	John D. Wilkinson, Hank M. Hudson, Michael C. Pierce	2001-02-06	$6,116,000
5983664	Hydrocarbon gas processing	John D. Wilkinson, Hank M. Hudson, Michael C. Pierce	1999-11-16	$6,442,000
5881569	Hydrocarbon gas processing	John D. Wilkinson, Hank M. Hudson, Kyle T. Cueller	1999-03-16	$3,898,000
5771712	Hydrocarbon gas processing	John D. Wilkinson, Hank M. Hudson	1998-06-30	$1,991,000
5568737	Hydrocarbon gas processing	John D. Wilkinson, Hank M. Hudson	1996-10-29	$1,151,000
5555748	Hydrocarbon gas processing	John D. Wilkinson, Hank M. Hudson, Michael C. Pierce	1996-09-17	$1,178,000
5275005	Gas processing	John D. Wilkinson, Hank M. Hudson	1994-01-04	$2,247,000
4889545	Hydrocarbon gas processing	John D. Wilkinson, Hank M. Hudson	1989-12-26	$582,000
4869740	Hydrocarbon gas processing	John D. Wilkinson, Hank M. Hudson	1989-09-26	$502,000
4854955	Hydrocarbon gas processing	John D. Wilkinson, Hank M. Hudson	1989-08-08	$464,000
4278457	Hydrocarbon gas processing	John D. Wilkinson	1981-07-14

Roy E. Campbell — 12 Patents

Issued Patents All Time

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