Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5057674 | Self limiting electric heating element and method for making such an element | — | 1991-10-15 |
| 4983342 | Method of making water and fire resistant building material | Johannes Berg | 1991-01-08 |
| 4954695 | Self-limiting conductive extrudates and methods therefor | Jack M. Walker | 1990-09-04 |
| 4820345 | Water and fire resistant building material | Johannes Berg | 1989-04-11 |
| 4654511 | Layered self-regulating heating article | David A. Horsma, Bernard J. Lyons | 1987-03-31 |
| 4618369 | Oil-in-water suspensions as additives for cements | — | 1986-10-21 |
| 4592859 | Oil-in-water or water-in-oil suspensions and uses therefor | — | 1986-06-03 |
| 4569920 | Preparation of inorganic particle slurries | — | 1986-02-11 |
| 4552800 | Composite inorganic structures | Earl Blasch | 1985-11-12 |
| 4543474 | Layered self-regulating heating article | David A. Horsma, Bernard J. Lyons | 1985-09-24 |
| 4540195 | Cross-country ski sole | — | 1985-09-10 |
| 4534889 | PTC Compositions and devices comprising them | Peter H. van Konynenburg, Bernard J. Lyons, Wendell W. Moyer | 1985-08-13 |
| 4428895 | Composite inorganic structures and process of producing same | Earl Blasch | 1984-01-31 |
| 4369151 | Freezing organic particulate slurries | — | 1983-01-18 |
| 4352694 | Process of producing sorel cement | — | 1982-10-05 |
| 4330703 | Layered self-regulating heating article | David A. Horsma, Bernard J. Lyons | 1982-05-18 |
| 4321295 | Modified graphite and process for using same | — | 1982-03-23 |
| 4286376 | Method of making heater cable of self-limiting conductive extrudates | Jack M. Walker | 1981-09-01 |
| 4246209 | Freezing inorganic particulate slurries | — | 1981-01-20 |
| 4209339 | Cement compositions | — | 1980-06-24 |
| 4205994 | Expansive cement and agent therefor | Wendell W. Moyer | 1980-06-03 |