Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11053432 | Ultra high strength proppant and method of preparing the same | Bryan Dell Geary, Carl Sorrell, Craig Searchfield | 2021-07-06 |
| 7754633 | Chromia-alumina refractory | H. David Prior, Viktor Fischer | 2010-07-13 |
| 5360773 | High density fused silica mixes, refractory shapes made therefrom, and method of making the same | Harold F. Gallman | 1994-11-01 |
| 5188989 | Coating mix to prevent oxidation of carbon substrates | Eugene T. Rushe | 1993-02-23 |
| 5028570 | Silicon nitride bonded magnesia refractory and method | Ke-Chin Wang | 1991-07-02 |
| 4810415 | Process for manufacturing ultra pure silica and resulting encapsulated products | Glenn A. Moore | 1989-03-07 |
| 4627945 | Method of manufacturing an injection molded refractory shape and composition thereof | Ke-Chin Wang, Frank Walther, Donald F. Stock | 1986-12-09 |
| 4600607 | Bonding a sialon coating to a substrate | Ke-Chin Wang, Eugene T. Rushe | 1986-07-15 |
| 4557884 | Refractory | Daniel R. Petrak, Thomas R. Kleeb, Ke-Chin Wang | 1985-12-10 |
| 4533646 | Nitride bonded oxide refractories | Ke-Chin Wang | 1985-08-06 |
| 4528244 | Fused silica shapes | Ke-Chin Wang | 1985-07-09 |
| 4500644 | Preparation and composition of sialon grain and powder | Kenneth W. Hill, Ke-Chin Wang | 1985-02-19 |
| 4460528 | Refractory | Daniel R. Petrak, Thomas R. Kleeb, Ke-Chin Wang | 1984-07-17 |