Hollstein; Elmer J.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hollstein; Elmer J..The latest application filed is for "solid superacid catalyst comprising group vii metal and having h.sub.o less than -18".

Company Profile

0.13.0

Hollstein; Elmer J. - Wilmington DE

*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
Solid superacid catalyst comprising group VII metal and having H.sub.o less than -18 Grant 5,780,383 - Hollstein , et al. * July 14, 1	1998-07-14
Solid superacid alkylation catalyst compositions and alkylation method using the same Grant 5,493,067 - Angstadt , et al. * February 20, 1	1996-02-20
Alkylation process using solid superacid catalyst liquid phase Grant 5,491,278 - Angstadt , et al. February 13, 1	1996-02-13
Processes using solid-acid catalyst composition Grant 5,321,197 - Angstadt , et al. * June 14, 1	1994-06-14
Processes using solid-acid catalyst compositions Grant 5,310,868 - Angstadt , et al. May 10, 1	1994-05-10
Solid-acid alkylation catalyst compositions for alkylation processes Grant 5,214,017 - Angstadt , et al. May 25, 1	1993-05-25
Solid-acid alkylation catalyst compositions for alkylation processes Grant 5,212,136 - Angstadt , et al. May 18, 1	1993-05-18
Catalyst for hydrocarbon conversion and conversion process utilizing the same Grant 4,956,519 - Hollstein , et al. September 11, 1	1990-09-11
Catalyst for hydrocarbon conversion and conversion process utilizing the same Grant 4,918,041 - Hollstein , et al. April 17, 1	1990-04-17
Process to upgrade coal liquids by extraction prior to hydrodenitrogenation Grant 4,353,792 - Schneider , et al. October 12, 1	1982-10-12
Preparation of thermoplastic polymer fibrilla and fibril Grant 4,107,243 - Stearns , et al. August 15, 1	1978-08-15
Process For Aromatic Lactams Grant 3,723,436 - Hollstein , et al. March 27, 1	1973-03-27
Preparation Of 2-pyrrolidinone Grant 3,681,387 - Hollstein , et al. August 1, 1	1972-08-01

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