Hobe Schroeder — 22 Patents at Amoco

Hobe Schroeder has been granted 22 US patents while listed as an inventor at Amoco. The first was granted in 1980 and the most recent in November 1994. Hobe Schroeder ranks #189,202 of 4,157,543 US inventors in our database (top 4.6%). Patent records list Hobe Schroeder in Warrenville, IL, US.

Patents per Year

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Showing 1–22 of 22 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5362908	Catalyst and method for purifying crude terephthalic acid, isophthalic acid or naphthalene dicarboxylic acid	Ricky L. Wittman	1994-11-08	$58,182,000
5354898	Method for purifying crude aromatic carboxylic acids	—	1994-10-11	$28,061,000
4937378	Purification of crude isophthalic acid	—	1990-06-26	$14,443,000
4933491	Method for purifying a crude naphthalene dicarboxylic acid	Rusins Albertins, Stephen J. Pietsch, Juergen K. Holzhauer	1990-06-12	$11,775,000
4933492	Purification of crude isophthalic acid	Ricky L. Wittman	1990-06-12	$11,775,000
4892972	Purification of crude terephthalic acid	David E. James	1990-01-09	$41,140,000
4833269	Method for purifying terephthalic acid recycle streams	—	1989-05-23	$26,125,000
4808751	Method for reactivating a group VIII noble metal catalyst for use in the purification of crude terephthalic acid	Ricky L. Wittman	1989-02-28	$6,007,000
4743577	Catalyst composition	Ricky L. Wittman	1988-05-10	$18,424,000
4728630	Rhodium on carbon catalyst	Ricky L. Wittman	1988-03-01	$18,172,000
4629715	Purification of terephthalic acid to relatively low levels of 4-carboxybenzaldehyde and catalyst therefor	—	1986-12-16	$22,948,000
4260546	Aged molten color of maleic anhydride	Donald E. Thomka	1981-04-07	$23,771,000
4234494	Formation, purification and recovery of phthalic anhydride	David Aaron Palmer	1980-11-18	$59,352,000
4233227	Phthalic anhydride formation and separation	David Aaron Palmer	1980-11-11	$38,270,000
4220596	Separation of phthalic anhydride from vapor mixture also containing water vapor	Jeffrey H. Schott, David Aaron Palmer	1980-09-02	$26,401,000
4215053	Production of ortho-phthalic acid and its conversion and recovery of phthalic anhydride	David Aaron Palmer, George E. Kuhlmann, Houssam M. Naim, Nicholas C. Huie	1980-07-29	$12,487,000
4215054	Production of liquid ortho-phthalic acid and its conversion to high purity phthalic anhydride	George E. Kuhlmann, Sydney G. Horsfield, David Aaron Palmer	1980-07-29	$12,487,000
4215056	Formation, purification and recovery of phthalic anhydride	David Aaron Palmer	1980-07-29	$12,487,000
4215055	Production of liquid ortho-phthalic acid and its conversion to high _purity phthalic anhdyride	David Aaron Palmer, George E. Kuhlmann, Sydney G. Horsfield	1980-07-29	$12,487,000
4215051	Formation, purification and recovery of phthalic anhydride	David Aaron Palmer	1980-07-29	$12,487,000
4215052	Production of liquid ortho-phthalic acid and its conversion to high purity phthalic anhydride	David Aaron Palmer, George E. Kuhlmann, Houssam M. Naim, Nicholas C. Huie	1980-07-29	$12,487,000
4197247	Removal of bromine from phthalic anhydride	Delbert H. Meyer	1980-04-08

Hobe Schroeder — 22 Patents

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