Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11702606 | Compositions and methods for marking hydrocarbon compositions with non-mutagenic dyes | Haresh Doshi, Thomas E. Nowakowski | 2023-07-18 |
| 10774280 | Compositions and methods for marking hydrocarbon compositions with non-mutagenic dyes | Haresh Doshi, Thomas E. Nowakowski | 2020-09-15 |
| 8529639 | Liquid dye formulations in non-petroleum based solvent systems | — | 2013-09-10 |
| 7842102 | Liquid dye formulations in non-petroleum based solvent systems | — | 2010-11-30 |
| 6666897 | Black alcohol soluble dye formulation | Alejandro Zimin, Sr. | 2003-12-23 |
| 6294110 | Color canceling marking systems | Al Zimin, Sr., Peter A. Caputo | 2001-09-25 |
| 6150306 | Fluorescent tracer dyes | — | 2000-11-21 |
| 5980593 | Silent fluorescent petroleum markers | Alejandro Zimin, Sr., Peter A. Caputo | 1999-11-09 |
| 5737871 | Method of preparing and utilizing petroleum fuel markers | — | 1998-04-14 |
| 5504199 | Method of introducing dyes to ethanol | Alejandra Zimin, Peter A. Caputo, David L. Booth, Michael P. Hinton | 1996-04-02 |
| 5490872 | Acid extractable petroleum fuel markers | Michael J. Hallisy, Michael P. Hinton | 1996-02-13 |
| 5306343 | Tagging and identifying asphalt additives | Walter A. Richardson, Alejandro Zimin, Sr., James J. Fuerholzer, Michael P. Hinton, Peter A. Caputo | 1994-04-26 |
| 5205840 | Markers for petroleum, method of tagging, and method of detection | Michael P. Hinton | 1993-04-27 |
| 5156653 | Silent markers for petroleum, method of tagging, and method of detection | Richard B. Orelup | 1992-10-20 |
| 5142030 | Disazo colorants having a 4,4'-diaminobenzanilide tetrazo component | Alejandro Zimin, Sr., Adam E. Verillo | 1992-08-25 |
| 5049189 | Method of preparing a solution of sulfonated aryl azo/diaryl guanidine-complexed dye | Michael P. Hinton, Alejandro Zimin, Sr. | 1991-09-17 |