Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8182922 | Composite ceiling tile | John J. Polyner, Terry Couch | 2012-05-22 |
| 8147629 | Ceiling tile construction | — | 2012-04-03 |
| 8133354 | Acoustic ceiling tiles made with paper processing waste | — | 2012-03-13 |
| 7949441 | System and method for selectively limiting tractive effort to facilitate train control | Richard L. Evans, Scott Sexauer, Christopher E. Pallo, Ning Zhang, Steven Andrew Kellner +3 more | 2011-05-24 |
| 7732043 | Ceiling tile with non uniform binder composition | William Schmitt | 2010-06-08 |
| 7703243 | Ceiling tile construction | — | 2010-04-27 |
| 7410688 | Lightweight panel | — | 2008-08-12 |
| 6922619 | System and method for selectively limiting tractive effort to facilitate train control | Richard L. Evans, Scott Sexauer, Christopher E. Pallo, Ning Zhang, Steven Andrew Kellner +3 more | 2005-07-26 |
| 6688021 | Locomotive snow removal enhancement | Admir Mesalic, Ryan E. Perry | 2004-02-10 |
| 6443256 | Dual layer acoustical ceiling tile having an improved sound absorption value | — | 2002-09-03 |
| 6276281 | Method and apparatus for control of a rail contaminant cleaning system | Admir Mesalic, Arthur Lee Wheeler, Bret Dwayne Worden, Ajith Kuttannair Kumar | 2001-08-21 |
| 6268042 | High strength low density board for furniture industry | — | 2001-07-31 |
| 5922447 | Lightweight gypsum board | — | 1999-07-13 |
| 5911818 | Acoustical tile composition | — | 1999-06-15 |
| 5558710 | Gypsum/cellulosic fiber acoustical tile composition | — | 1996-09-24 |
| 5395438 | Mineral wool-free acoustical tile composition | Mark H. Englert, John C. Gaynor, Michael A. Kacner, Rajinder Singh | 1995-03-07 |
| 5320677 | Composite material and method of producing | — | 1994-06-14 |