HK

Howard P. Klein

HP Huntsman Petrochemical: 30 patents #2 of 174Top 2%
Chevron: 15 patents #293 of 4,788Top 7%
AT Arco Chemical Technology: 1 patents #171 of 285Top 60%
HI Huntsman International: 1 patents #149 of 400Top 40%
🗺 Texas: #1,896 of 125,132 inventorsTop 2%
Overall (All Time): #60,404 of 4,157,543Top 2%
47
Patents All Time

Issued Patents All Time

Showing 26–47 of 47 patents

Patent #TitleCo-InventorsDate
6515145 Process for the production of carbonates that melt at a high temperature James R. Machac, Jr., Edward T. Marquis 2003-02-04
6503891 Water emulsifiable formulations Edward T. Marquis, George P. Speranza 2003-01-07
6498278 Alkoxylation of 6-membered alkylene carbonates John H. Clements, Edward T. Marquis 2002-12-24
6479593 Absorbent polymer modification John H. Clements, Edward T. Marquis, James R. Machac, Jr., Katty Darragas 2002-11-12
6420327 Carbonate-based coating removers James R. Machac, Jr., Edward T. Marquis, Susan A. Woodrum 2002-07-16
6262297 Preparation of hydroxyalkylcarbamates from six-membered cyclic carbonates John H. Clements, Edward T. Marquis, James R. Machac, Jr. 2001-07-17
5340889 Liquification of bis-carbonates of bis-glycidyl ethers Wheeler C. Crawford, Edward T. Marquis 1994-08-23
5235007 Epoxy curing agents David C. Alexander, Wheeler C. Crawford 1993-08-10
4888446 Preparation of polyoxyalkylene glycol amines Michael Cuscurida 1989-12-19
4820810 Urea catalyst for preparation of sucrose polyols useful for rigid polyurethane foams Michael E. Brennan 1989-04-11
4654376 Polyurethane foams based on amino polyols Michael E. Brennan, Kenneth G. McDaniel 1987-03-31
4612335 Polyoxyalkylene polyether amino alcohols containing a tertiary hydroxyl group and flexible polyurethanes made therefrom Michael Cuscurida 1986-09-16
4523025 Polymer polyols from partially reacted polyamines Michael Cuscurida 1985-06-11
4465858 Procedure for the partial alkoxylation of polyoxyalkyleneamines Michael Cuscurida 1984-08-14
4465791 Process for preparing polyol-catalyst mixtures useful in the preparation of rigid polyurethane cellular products George P. Speranza 1984-08-14
4404120 Process for preparing hydroxy-containing amine complexes which are useful as catalysts for trimerizing isocyanates and preparing polyurethanes George P. Speranza 1983-09-13
4404121 Process for preparing polyol-catalyst mixtures useful in the preparation of rigid polyurethane cellular products George P. Speranza 1983-09-13
4251637 Tertiary amino substituted oxazolidines as polyisocyanurate catalysts Edward E. McEntire, Robert L. Zimmerman 1981-02-17
4239916 Isocyanurate foam catalyst Robert L. Zimmerman, Edward E. McEntire 1980-12-16
4226971 Phenol-aldehyde condensation product with aminoalkylene derivative of a polyoxyalkylenepolyamine Harold G. Waddill 1980-10-07
4186255 Bis-quaternary ammonium salts as polyisocyanurate catalysts George P. Speranza 1980-01-29
4184024 Polyurethanes prepared from polyols from 2,3-morpholinediones 1980-01-15