Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6544702 | Charge transport layers comprising hydrazones and photoconductors including the same | Gregory W. Haggquist, Ronald Harold Levin | 2003-04-08 |
| 6432597 | Electrophotographic photoconductor containing fluorenyl-azine derivatives and triarylamine in transport layer | Gregory W. Haggquist, Ronald Harold Levin, Weimei Luo | 2002-08-13 |
| 6300025 | Photoconductors with polysiloxane and polyvinylbutyral blends | Gregory W. Haggquist, Kasturi Rangan Srinivasan | 2001-10-09 |
| 6245471 | Charge generation layers comprising at least one titanate and photoconductors including the same | Ronald Harold Levin | 2001-06-12 |
| 6114583 | Preparation of triarylamines | Mark Thomas Bellino, Ronald Harold Levin, Weimei Luo | 2000-09-05 |
| 6080518 | Electrophotographic photoconductor containing simple quinones to improve electrical properties | Ronald Harold Levin | 2000-06-27 |
| 6022657 | Methods of making charge generation layers containing charge transport compound, and photoconductors containing the same | Sterritt R. Fuller, Jr., Gregory W. Haggquist, Laura Lee Kierstein, Ronald Harold Levin, Jennifer Kaye Neely +1 more | 2000-02-08 |
| 5994013 | Dual layer photoconductors with charge generation layer containing charge transport compound | Ronald Harold Levin, Jennifer Kaye Neely, Catherine Mailhe Randolph | 1999-11-30 |
| 5976633 | Dip coating through elevated ring | — | 1999-11-02 |
| 5972549 | Dual layer photoconductors with charge generation layer containing hindered hydroxylated aromatic compound | Ronald Harold Levin | 1999-10-26 |
| 5925486 | Imaging members with improved wear characteristics | Ronald Harold Levin | 1999-07-20 |
| 5895739 | Enhanced photoconductive oxo-titanyl phthalocyanine | Ronald Harold Levin, Catherine Mailhe Randolph | 1999-04-20 |