Humphreys; David C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Humphreys; David C..The latest application filed is for "on demand three dimensional roof system manufacturing".
- Humphreys; David C. - Joplin MO
- Humphreys; David C. - Galena KS
| Patent | Date |
|---|---|
| System and method for reducing viscosity variations in roofing asphalt Grant 11,186,747 - Humphreys November 30, 2 | 2021-11-30 |
| Peel and stick waterproofing material Grant 10,857,759 - Humphreys , et al. December 8, 2 | 2020-12-08 |
| On Demand Three Dimensional Roof System Manufacturing App 20200376581 - Humphreys; David C. ; et al. | 2020-12-03 |
| System And Method For Reducing Viscosity Variations In Roofing Asphalt App 20200040220 - Humphreys; David C. | 2020-02-06 |
| Shingle with headlap mask Grant 10,415,248 - Humphreys , et al. Sept | 2019-09-17 |
| Peel And Stick Waterproofing Material App 20180290427 - Humphreys; David C. ; et al. | 2018-10-11 |
| Peel and stick waterproofing material Grant 9,821,532 - Humphreys , et al. November 21, 2 | 2017-11-21 |
| Peel And Stick Waterproofing Material App 20170072660 - Humphreys; David C. ; et al. | 2017-03-16 |
| Peel and stick waterproofing material Grant 9,534,378 - Humphreys , et al. January 3, 2 | 2017-01-03 |
| Peel And Stick Waterproofing Material App 20160303825 - Humphreys; David C. ; et al. | 2016-10-20 |
| System And Method For Reducing Viscosity Variations In Roofing Asphalt App 20160090512 - Humphreys; David C. | 2016-03-31 |
| Peel And Stick Waterproofing Material App 20150259900 - Humphreys; David C. ; et al. | 2015-09-17 |
| Roofing Underlayment App 20150126088 - Shifferd; Michael R. ; et al. | 2015-05-07 |
| Shingle With Headlap Mask App 20140259820 - Humphreys; David C. ; et al. | 2014-09-18 |
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