Issued Patents All Time
Showing 25 most recent of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6802870 | Method for imparting soil and stain resistance to carpet | Robert F. Deutsch | 2004-10-12 |
| 6736857 | Method for imparting soil and stain resistance to carpet | Robert F. Deutsch | 2004-05-18 |
| 6723438 | Soil resistant curable laminate coating | Irvin F. Dunsmore | 2004-04-20 |
| 6468587 | Treatment of fibrous substrates with acidic silsesquioxanes emulsions | Angela J. Nixon, Irvin F. Dunsmore | 2002-10-22 |
| 6235128 | Carbon and alloy steels thermochemical treatments | John J. Krieg, Richard B. Roe, Steve Stormzand, Tony Wu, Lynn Lu +1 more | 2001-05-22 |
| 6162485 | Fingerprinting system and method | — | 2000-12-19 |
| 6074436 | Carpet treatment composition comprising polycarboxylate salts | Shou-Lu G. Wang, Irvin F. Dunsmore, Robert F. Kamrath | 2000-06-13 |
| 6060428 | Heat-sensitive chromogenic system | Donald J. Hoffmann, Ronald R. Garrison, Derrick Kraus | 2000-05-09 |
| 5970875 | Pressure-sensitive tamper evident system | Donald J. Hoffmann | 1999-10-26 |
| 5898017 | Multicolor chromogenic system having improved image quality | — | 1999-04-27 |
| 5880063 | Method of improving coverage of chromogenic reaction product | Donald Hoffman | 1999-03-09 |
| 5759327 | Mailer printing method using ethylene vinyl acetate copolymer as a dual functional coating | — | 1998-06-02 |
| 5756181 | Repellent and soil resistant carpet treated with ammonium polycarboxylate salts | Shou-Lu G. Wang, Irvin F. Dunsmore, Robert F. Kamrath | 1998-05-26 |
| 5744201 | Method for treating carpet using PH adjustment | Shou-Lu G. Wang, Irvin F. Dunsmore, Robert F. Kamrath | 1998-04-28 |
| 5738687 | Method for treating carpets with polycarboxylate salts to enhance soil resistance and repellency | Robert F. Kamrath, Shou-Lu G. Wang, Irvin F. Dunsmore | 1998-04-14 |
| 5644352 | Multicolor heat-sensitive verification and highlighting system | Eric Wendler, Vance P. Gregory, Jr. | 1997-07-01 |
| 5618063 | Multicolor heat-sensitive verification and highlighting system | Eric Wendler, Vance P. Gregory, Jr. | 1997-04-08 |
| 5612541 | Ultraviolet radiation monitoring device and use thereof | Donald J. Hoffmann | 1997-03-18 |
| 5605873 | Pressure-sensitive verification system and use thereof | — | 1997-02-25 |
| 5595955 | Verification method using pressure and heat-sensitive chromogenic system | Richard H. Johnson | 1997-01-21 |
| 5545459 | Business forms having dual-functional coating | — | 1996-08-13 |
| 5536046 | Heat sensitive system and use thereof | — | 1996-07-16 |
| 5492599 | Treated substrate having improved release properties | Christopher Olson, Ramesh C. Kumar | 1996-02-20 |
| 5484169 | Hidden entry system and image-developing device therefor | Donald J. Hoffmann | 1996-01-16 |
| 5431452 | Hidden entry system and image-developing device therefor | Donald J. Hoffmann | 1995-07-11 |