Issued Patents All Time
Showing 25 most recent of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6204297 | Nonionic gemini surfactants | Ruoxin Li, Manilal S. Dahanayake, Jiang Yang | 2001-03-20 |
| 6121222 | Anionic surfactants having multiple hydrophobic and hydrophilic groups | Ruoxin Li, Jiang Yang, Manilal S. Dahanayake | 2000-09-19 |
| 6057282 | High purity imidazoline-based amphoacetate surfactants | Bharat Desai, Peter Lees, Jean-Marc Ricca | 2000-05-02 |
| 6057463 | N-acylaminoalkane sulfonate and amphoteric surfactant blends and methods for preparing the same | Paul F. D'Angelo | 2000-05-02 |
| 5952291 | Process for the preparation of high purity imidazoline based amphoacetate surfactants | Bharat Desai, Peter Lees, Jean-Marc Ricca | 1999-09-14 |
| 5952290 | Anionic gemini surfactants and methods for their preparation | Ruoxin Li | 1999-09-14 |
| 5945393 | Nonionic gemini surfactants | Ruoxin Li, Manilal S. Dahanayake, Jiang Yang | 1999-08-31 |
| 5922671 | Anionic surfactants having multiple hydrophobic and hydrophilic groups | Ruoxin Li, Jean-Marc Ricca | 1999-07-13 |
| 5914310 | Amphoteric surfactants having multiple hydrophobic and hydrophilic groups | Ji Li, Manilal S. Dahanayake, Robert Lee Reierson | 1999-06-22 |
| 5900397 | Nonylphenol nonionic gemini surfactants | Ruoxin Li | 1999-05-04 |
| 5863886 | Nonionic gemini surfactants having multiple hydrophobic and hydrophilic sugar groups | Ruoxin Li, Jiang Yang | 1999-01-26 |
| 5846926 | Nonionic gemini surfactants with three hydrophilic heads and two lipophilic tails | Ruoxin Li, Jiang Yang | 1998-12-08 |
| 5837668 | Acyloxyalkane sulfonate and amphoteric surfactant blend compositions and methods for preparing same | Paul F. D'Angelo | 1998-11-17 |
| 5811384 | Nonionic gemini surfactants | Ruoxin Li, Manilal S. Dahanayake, Jiang Yang | 1998-09-22 |
| 5789371 | Amphoteric surfactants having multiple hydrophobic and hydrophilic groups | Ruoxin Li, Jiang Yang | 1998-08-04 |
| 5783554 | Cleaning compositions containing anionic surfactants having multiple hydrophobic and hydrophilic groups | Ji Li, Manilal S. Dahanayake, Robert Lee Reierson | 1998-07-21 |
| 5744063 | Higher purity imidazoline based amphoacetate surfactants and processes for the preparation thereof | Bharat Desai, Peter Lees, Jean-Marc Ricca | 1998-04-28 |
| 5710121 | Anionic surfactants having multiple hydrophobic and hydrophilic groups | Ruoxin Li, Jean-Marc Ricca | 1998-01-20 |
| 5656586 | Amphoteric surfactants having multiple hydrophobic and hydrophilic groups | Ji Li, Manilal S. Dahanayake, Robert Lee Reierson | 1997-08-12 |
| 5643498 | Quaternary cationic surfactants having multiple hydrophobic and hydrophilic groups | Ji Li, Manilal S. Dahanayake, Robert Lee Reierson | 1997-07-01 |
| 5643864 | Anionic surfactants having multiple hydrophobic and hydrophilic groups | Ji Li, Manilal S. Dahanayake, Robert Lee Reierson | 1997-07-01 |
| 5300665 | Process for preparing fatty acid esters and amides of sulfonic acid salts | Mitchell B. Ferguson, Gordon Wall | 1994-04-05 |
| 5294644 | Surface active lactams | Robert B. Login, Ratan K. Chaudhuri, Rama Haldar, Mohamed M. Hashem, Michael W. Helioff | 1994-03-15 |
| 5156837 | Cosmetic compositions containing quaternized nitrogen compounds | Ratan K. Chaudhuri, Robert B. Login | 1992-10-20 |
| 5110585 | Quaternized nitrogen containing polycyclic compounds | Ratan K. Chaudhuri, Robert B. Login, Michael W. Helioff | 1992-05-05 |