William C. Copenhafer — 19 Patents at Fmc

William C. Copenhafer has been granted 19 US patents while listed as an inventor at Fmc. The first was granted in 1981 and the most recent in October 2014. William C. Copenhafer ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list William C. Copenhafer in Yardley, PA, US.

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Showing 1–19 of 19 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8858902	Selective removal of sulfide from aqueous alkali solutions	—	2014-10-14
8454840	Selective removal of sulfide from aqueous alkali solutions	—	2013-06-04
7998446	Flue gas desulfurization process utilizing hydrogen peroxide	Henry A. Pfeffer	2011-08-16	$8,904,000
7638109	Production of sodium sesquicarbonate and sodium carbonate monohydrate	—	2009-12-29	$15,678,000
7018594	Crystallization of sodium carbonate decahydrate from liquors supersaturated in sodium bicarbonate	—	2006-03-28
6576206	Bicarbonate conversion in a carbonate monohydrate process	Thomas H. Neuman	2003-06-10
6428759	Production of feed liquors for sodium carbonate crystallization processes	David E. Smith, Richard W. Chastain	2002-08-06
6228335	Process for the production of sodium carbonate crystals	David E. Smith	2001-05-08
6022516	Method of reducing the formation of scale in the production of soda ash from trona and nahcolite ores	Edward Maleskas	2000-02-08	$4,494,000
5283054	Process for producing sodium salts from brines of sodium ores	David E. Smith, Gerald Niedringhaus	1994-02-01	$3,486,000
5262134	Process for producing sodium salts from brines of sodium ores	William R. Frint	1993-11-16	$1,027,000
5194176	Peroxygen laundry bleach	Basil A. Guiliano, William A. Hills, Charles V. Juekle, Stephen Tomko	1993-03-16	$2,400,000
4729881	Hydrometallurgical process for the production of beryllium	—	1988-03-08	$6,710,000
4654204	Production of sodium bicarbonate by reversion of soda-type feed salt	Henry A. Pfeffer, Francis Rauh	1987-03-31	$3,185,000
4652054	Solution mining of trona or nahcolite ore with electrodialytically-produced aqueous sodium hydroxide	Henry A. Pfeffer	1987-03-24	$9,769,000
4588569	Dry injection flue gas desulfurization process using absorptive soda ash sorbent	Michael J. Cyran	1986-05-13	$4,255,000
4519806	Enhanced recovery of soda ash from aqueous sodium carbonate solutions containing Na.sub.2 SO.sub.4 - and NaCl	Michael L. Pinsky	1985-05-28	$3,010,000
4288419	Enhanced recovery of sodium carbonate from NaCl-containing sodium carbonate solutions	Francis Rauh	1981-09-08	$1,868,000
4283372	Recovery of alkali values from sodium bicarbonate-containing ore with ammonia	William R. Frint, Michael L. Pinsky	1981-08-11	$1,996,000

William C. Copenhafer — 19 Patents

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