Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12344546 | High performance fiberglass composition | Michelle L. Korwin-Edson | 2025-07-01 |
| 11214512 | High performance fiberglass composition | Michelle L. Korwin-Edson | 2022-01-04 |
| 10407342 | Method of manufacturing S-glass fibers in a direct melt operation and products formed therefrom | Douglas A. Hoffmann | 2019-09-10 |
| 9878941 | Glass composition for producing high strength and high modulus fibers | Douglas A. Hofmann | 2018-01-30 |
| 9695083 | Method of manufacturing S-glass fibers in a direct melt operation and products formed therefrom | Douglas A. Hofmann | 2017-07-04 |
| 9656903 | Method of manufacturing high strength glass fibers in a direct melt operation and products formed there from | Douglas A. Hofmann, David J. Baker, John W. Wingert, Byron Bemis | 2017-05-23 |
| 9586856 | High strength glass fibers with controlled refractive index, composition for making such fibers and composite materials formed therefrom | Douglas A. Hofmann, Rebecca Elaine Cochran | 2017-03-07 |
| 9546107 | Glass composition for the manufacture of fibers and process | Douglas A. Hofmann, Michelle L. Korwin-Edson | 2017-01-17 |
| 9352999 | Glass composition for producing high strength and high modulus fibers | Douglas A. Hofmann | 2016-05-31 |
| 9346944 | Glass composition for producing high strength and high modulus fibers | Douglas A. Hofmann | 2016-05-24 |
| 9206068 | Method of manufacturing S-glass fibers in a direct melt operation and products formed therefrom | Douglas A. Hofmann, David J. Baker, John W. Wingert, Byron Bemis | 2015-12-08 |
| 9187361 | Method of manufacturing S-glass fibers in a direct melt operation and products formed there from | Douglas A. Hofmann | 2015-11-17 |
| 9156729 | High refractive index glass composition | Douglas A. Hofmann | 2015-10-13 |
| 9029279 | Glass composition for producing high strength and high modulus fibers | Douglas A. Hofmann | 2015-05-12 |
| 8987154 | Modulus, lithium free glass | Douglas A. Hofmann, John W. Wingert, Anne Berthereau | 2015-03-24 |
| 8586491 | Composition for high performance glass, high performance glass fibers and articles therefrom | Douglas A. Hofmann | 2013-11-19 |
| 8563450 | Composition for high performance glass high performance glass fibers and articles therefrom | Douglas A. Hofmann | 2013-10-22 |
| 8341978 | Method of manufacturing high performance glass fibers in a refractory lined melter and fiber formed thereby | Douglas A. Hofmann | 2013-01-01 |
| 8338319 | Composition for high performance glass fibers and fibers formed therewith | Douglas A. Hofmann | 2012-12-25 |
| 8252707 | Composition for high performance glass fibers and fibers formed therewith | Douglas A. Hofmann | 2012-08-28 |
| 7823417 | Method of manufacturing high performance glass fibers in a refractory lined melter and fiber formed thereby | Douglas A. Hoffmann | 2010-11-02 |
| 7799713 | Composition for high performance glass, high performance glass fibers and articles therefrom | Douglas A. Hofmann | 2010-09-21 |
| 7767606 | Low viscosity E-glass composition enabling the use of platinum and rhodium free bushings | Douglas A. Hofmann | 2010-08-03 |
| 6809050 | High temperature glass fibers | — | 2004-10-26 |
| 5932347 | Mineral fiber compositions | Charles F. Rapp | 1999-08-03 |