The Ralph M. Parsons Company

Patent Applications and Registrations

Patent applications and USPTO patent grants for The Ralph M. Parsons Company.The latest application filed is for "oxygen-based noncatalytic sulfuric acid process".

Company Profile

0.18.0

The Ralph M. Parsons Company - Pasadena CA
The Ralph M. Parsons Co. - Pasadena CA
The Ralph M. Parsons Company - Los Angeles CA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Oxygen-based noncatalytic sulfuric acid process Grant 5,194,239 - Masseling , et al. March 16, 1	1993-03-16
Dual combustion oxygen-enriched claus sulfur plant Grant 4,780,305 - Steppe October 25, 1	1988-10-25
Process for sulfur production Grant 4,406,873 - Beavon * September 27, 1	1983-09-27
Process for sulfur production Grant 4,279,882 - Beavon July 21, 1	1981-07-21
Process for removal of carbonyl sulfide in liquified hydrocarbon gases with absorption of acid gases Grant 4,233,141 - Beavon , et al. November 11, 1	1980-11-11
Process for hydrogen sulfide production Grant 4,146,580 - Beavon March 27, 1	1979-03-27
Hydrogen sulfide production Grant 4,094,961 - Beavon June 13, 1	1978-06-13
Process for the production of fuel values from coal Grant 4,050,908 - McNamee , et al. September 27, 1	1977-09-27
Process for desulfurization of coke oven gas Grant 4,041,130 - Mackles August 9, 1	1977-08-09
Apparatus for the production of sulfur from mixtures of hydrogen sulfide and fixed nitrogen compounds Grant 4,038,036 - Beavon July 26, 1	1977-07-26
Sulfur plant temperature control Grant 4,029,753 - Beavon June 14, 1	1977-06-14
Process for the production of sulfur from sulfur dioxide extracted from gas streams Grant 3,970,744 - Riesenfeld July 20, 1	1976-07-20
Process for the production of sulfur from mixtures of hydrogen sulfide and fixed nitrogen compounds Grant 3,970,743 - Beavon July 20, 1	1976-07-20
In situ recovery of hydrocarbons from tar sands Grant 3,946,810 - Barry March 30, 1	1976-03-30
In situ recovery of hydrocarbons from tar sands Grant 3,945,435 - Barry March 23, 1	1976-03-23
Process for the production of substitute natural gas Grant 3,938,968 - White , et al. February 17, 1	1976-02-17
Process for the conversion of hydrogen sulfide in gas streams of low hydrogen sulfide concentration to sulfur Grant 3,880,986 - Beavon April 29, 1	1975-04-29
Process for the removal of hydrogen cyanide from gas streams Grant 3,878,289 - Beavon April 15, 1	1975-04-15

uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.

While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.

All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.