Issued Patents All Time
Showing 176–193 of 193 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5532331 | Thiodiphenol copolycarbonates and their use as components of multilayered polymeric reflective bodies | Stephen E. Bales, Charles A. Langhoff | 1996-07-02 |
| 5486949 | Birefringent interference polarizer | Walter J. Schrenk, Victor S. Chang | 1996-01-23 |
| 5448404 | Formable reflective multilayer body | Walter J. Schrenk, Charles B. Arends, Conrad F. Balazs, Ray A. Lewis | 1995-09-05 |
| 5360659 | Two component infrared reflecting film | Charles B. Arends, Walter J. Schrenk, Ray A. Lewis, Ravi Ramanathan | 1994-11-01 |
| 5353154 | Polymeric reflective materials utilizing a back light source | William G. Lutz, Gregg A. Motter | 1994-10-04 |
| RE34605 | Infrared reflective optical interference film | Walter J. Schrenk | 1994-05-10 |
| 5278694 | Optically dissimilar composition for polymeric reflective bodies | Walter J. Schrenk, Stephen E. Bales, Mark A. Barger, Charles A. Langhoff, Ravi Ramanathan | 1994-01-11 |
| 5269995 | Coextrusion of multilayer articles using protective boundary layers and apparatus therefor | Ravi Ramanathan, Walter J. Schrenk | 1993-12-14 |
| 5262894 | Multicomponent, multilayer polymeric reflective bodies | Walter J. Schrenk | 1993-11-16 |
| 5234729 | Multilayer polymeric reflective bodies for decorative and security applications | Walter J. Schrenk, David M. Wisniewski | 1993-08-10 |
| 5233465 | Visibly transparent infrared reflecting film with color masking | Walter J. Schrenk | 1993-08-03 |
| 5149578 | Multilayer film for tamper indication by use of optical interference reflection | Walter J. Schrenk | 1992-09-22 |
| 5126880 | Polymeric reflective bodies with multiple layer types | Walter J. Schrenk | 1992-06-30 |
| 5122906 | Thick/very thin multilayer reflective polymeric body | — | 1992-06-16 |
| 5122905 | Relective polymeric body | Walter J. Schrenk | 1992-06-16 |
| 5103337 | Infrared reflective optical interference film | Walter J. Schrenk | 1992-04-07 |
| 5095210 | Multilayer film indicator for determining the integrity or authenticity of an item and process for using same | Walter J. Schrenk | 1992-03-10 |
| 4937134 | Elastomeric optical interference films | Walter J. Schrenk, William E. Shrum | 1990-06-26 |