Issued Patents All Time
Showing 25 most recent of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9593210 | Methods of preparing polysilazane resin with low halogen content | Slawomir Rubinsztajn, Ryan Christopher Mills, Peter Kennedy Davis | 2017-03-14 |
| 8382883 | Membranes comprising amino acid mobile carriers | Gary William Yeager, Scott Michael Miller, Cathryn Ellen Olsen | 2013-02-26 |
| 8013173 | Method of purifying dianhydrides, the dianhydrides formed thereby, and polyetherimides formed therefrom | Beatriz Penalver Bernabe, Vijay Gopalakrishnan, Lioba Maria Kloppenburg, Matt Kuhlman, Roy Ray Odle +2 more | 2011-09-06 |
| 7863463 | Method of purifying dianhydrides | Albert Santo Stella, Beatriz Penalver Bernabe, Lioba Maria Kloppenburg, Lee H. Bergman | 2011-01-04 |
| 7674920 | Methods for preparing oxydiphthalic anhydrides, oxydiphthalic anhydrides prepared thereby, and polyetherimides derived therefrom | Beatriz Penalver Bernabe, Lioba Maria Kloppenburg, Matt Kuhlman, Roy Ray Odle, Narayan Ramesh +1 more | 2010-03-09 |
| 7495113 | Method of purifying dianhydrides | Lioba Maria Kloppenburg, John Morgan Whitney, Abhijit Namjoshi, Spencer Thomas Oulman | 2009-02-24 |
| 7084291 | Water resistant catalyst for the production of diaryl carbonates via the direct carbonylation of phenolic compounds | Grigorii Lev Soloveichik, Timothy Leigh Chuck, Kirill Vladimirovich Shalyaev, Peter Bonitatebus | 2006-08-01 |
| 7045666 | Bromination of hydroxyaromatic compounds and further conversion to dihydroxyaromatic compounds | John Yaw Ofori, Grigorii Lev Soloveichik, Ryan Christopher Mills, Jonathan Lloyd Male | 2006-05-16 |
| 7002046 | Process for the recovery of dihydroxybiaryl compounds | John Yaw Ofori, Ben Purushotam Patel | 2006-02-21 |
| 6982356 | Method for preparation of para-brominated hydroxyaromatic compounds | Jonathan Lloyd Male, Ryan Christopher Mills, John Yaw Ofori | 2006-01-03 |
| 6833482 | Method for production of bis(hydroxy-aromatic)compounds | Ben Purushotam Patel, Ryan Christopher Mills | 2004-12-21 |
| 6815565 | Method for preparing hydroquinones and dihydroxybiphenyl compounds from mixtures of bromophenols and benzoquinones | Ryan Christopher Mills, Timothy Leigh Chuck, John Yaw Ofori | 2004-11-09 |
| 6800779 | Method for producing aromatic carbonates | John Yaw Ofori | 2004-10-05 |
| 6521777 | Process for the production of diaryl carbonates | John Yaw Ofori, Kirill Vladimirovich Shalyaev, Eric Douglas Williams, Richard Anthony Battista | 2003-02-18 |
| 6506924 | Method for recovery of catalyst components | Marsha Mottel Grade, John Yaw Ofori | 2003-01-14 |
| 6472551 | Process for the production of diaryl carbonates | John Yaw Ofori, Kirill Vladimirovich Shalyaev, Eric Douglas Williams, Richard Anthony Battista | 2002-10-29 |
| 6441215 | Method for reducing carbonate decomposition in reaction mixtures | Kirill Vladimirovich Shalyaev, John E. Hallgren, John Yaw Ofori, Jonathan Lloyd Male | 2002-08-27 |
| 6423863 | Method of sustaining catalyst activity in the catalytic production of aromatic carbonates | — | 2002-07-23 |
| 6420587 | Catalyst system for producing aromatic carbonates | James Spivack, Donald Wayne Whisenhunt, Jr., James Norman Cawse, Bruce Fletcher Johnson, Grigorii Lev Soloveichik +1 more | 2002-07-16 |
| 6420589 | Process for the production of diaryl carbonates | John Yaw Ofori, Kirill Vladimirovich Shalyaev, Eric Douglas Williams, Richard Anthony Battista | 2002-07-16 |
| 6410774 | Method for recovery of catalyst components | Marsha Mottel Grade, John Yaw Ofori | 2002-06-25 |
| 6403821 | Catalyst composition and method for producing diaryl carbonates using nitrile as promoter | Grigorii Lev Soloveichik, Bruce Fletcher Johnson, Kirill Vladimirovich Shalyaev | 2002-06-11 |
| 6384262 | Process for the production of diaryl carbonates | John Yaw Ofori, Kirill Vladimirovich Shalyaev, Eric Douglas Williams, Richard Anthony Battista | 2002-05-07 |
| 6380417 | Catalysts system for producing aromatic carbonates | James Spivack, Donald Wayne Whisenhunt, Jr., James Norman Cawse, Bruce Fletcher Johnson, Grigorii Lev Soloveichik +1 more | 2002-04-30 |
| 6346499 | Catalyst composition for producing diaryl carbonates using carboxylic acid amide as promoter | Bruce Fletcher Johnson, Grigorii Lev Soloveichik, Kirill Vladimirovich Shalyaev | 2002-02-12 |