Simpson; Robert S.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Simpson; Robert S..The latest application filed is for "flashing and waterproofing membrane".
- Simpson; Robert S. - Coshocton OH
- Simpson; Robert S. - Fresno OH
| Patent | Date |
|---|---|
| Flashing and waterproofing membrane Grant 9,347,215 - Simpson , et al. May 24, 2 | 2016-05-24 |
| Flashing And Waterproofing Membrane App 20140059953 - Simpson; Robert S. ; et al. | 2014-03-06 |
| Flashing and waterproofing membrane Grant 8,603,629 - Simpson , et al. December 10, 2 | 2013-12-10 |
| Flashing And Waterproofing Membrane App 20110091675 - Simpson; Robert S. ; et al. | 2011-04-21 |
| Self-adhesive laminate for sealing window frames and method of sealing window frames Grant 6,627,017 - Simpson September 30, 2 | 2003-09-30 |
| Self-adhesive laminate for sealing window frames and method of sealing window frames App 20030039789 - Simpson, Robert S. | 2003-02-27 |
| Roof structure Grant 5,142,837 - Simpson , et al. September 1, 1 | 1992-09-01 |
| Laminated roofing sheet Grant 5,096,759 - Simpson , et al. March 17, 1 | 1992-03-17 |
| Process of making roofing material Grant 4,936,938 - Simpson , et al. June 26, 1 | 1990-06-26 |
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