Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10676619 | Pigment powders | Padma Kaviratna, Mark Tellefsen, Qingmin Cheng, Matthew Eddens | 2020-06-09 |
| 10639247 | Pigment mixtures | Mark Tellefsen | 2020-05-05 |
| 10219989 | Special effects with mixtures of interference pigments | Philip Linz | 2019-03-05 |
| 8530785 | Method for laser-marking and an article marked by such method | — | 2013-09-10 |
| 7272915 | Shingle and mat tensile strength with urea formaldehyde resin modifier | — | 2007-09-25 |
| 6993876 | Asphalt roofing composite including adhesion modifier-treated glass fiber mat | Krishna Srinivasan, William Davis Lee | 2006-02-07 |
| 6851240 | Shingle tear strength with fiber mixture of different fibers | Krishna Srinivasan, Bill Bittle, Betty Roberts, Mark McAteer | 2005-02-08 |
| 6817152 | Fiber mats for materials of construction having improved tear strength and process for making same | Krishna Srinivasan | 2004-11-16 |
| 6737369 | Cured non-woven mat of a mixture of fibers | Krishna Srinivasan, Bill Bittle, Betty Roberts, Mark McAteer | 2004-05-18 |
| 6706147 | Process for making fiber mats for materials of construction having improved tear strength | Krishna Srinivasan | 2004-03-16 |
| 6544911 | Fiber mats for materials of construction having improved tear strength and process for making same | Krishna Srinivasan | 2003-04-08 |