US3216883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant built-up roofing
Assignee: Flintkote Co
•
Filing: 1961-09-29
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Granted: 1965-11-09
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Philip C Bick
- 👤 Carl G Cash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:55
CPC Classifications
E; E04; E04D; E04D7/00; E04D7/005; E04D11/00; E04D11/02; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24413; Y10T428/24421; Y10T428/25; Y10T428/251
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A LIGHTWEIGHT FIRE RETARDANT BUILT-UP ROOF CAPABLE OF BEING INSTALLED ON A STEEP SLOPE, WHICH COMPRISES A WEB OF FIBROUS MATERIAL ATTACHED TO THE ROOF DECKS, A CONTINUOUS COATING OF THE DRIED RESIDUE OF A STATIC BITUMINOUS EMULSION OVER THE WEB AND A SUBSTANTILLY CONTINUOUS COATING OF VERMICULITE GRANULES OVER SAID COATING AND EXPOSED TO THE WEATHER, SID VERMICULITE BEING SELECTED FROM THE GROUP CONSISTING OF UNEXPANDED VERMICULITE GRANULES AND VERMICULITE GRANULES WHICH HAVE BEEN PARTIALLY EXPANDED TO AT LEAST 1/3 OF THEILR FULLY EXPANDED SIZE.
Claim 2
Dependent Claim
86 words
A LIGHTWEIGHT FIRE RETARDANT BUILT-UP ROOF CAPABLE OF BEING INSTALLED ON A STEEP SLOPE, WHICH COMPRISES A WEB OF FIBROUS MATERIAL ATTACHED TO THE ROOF DECKS, A CONTINUOUS COATING OF THE DRIED RESIDUE OF A STATIC BITUMINOUS EMULSION OVER THE WEB AND A SUBSTANTILLY CONTINUOUS COATING OF VERMICULITE GRANULES OVER SAID COATING AND EXPOSED TO THE WEATHER, SID VERMICULITE BEING SELECTED FROM THE GROUP CONSISTING OF UNEXPANDED VERMICULITE GRANULES AND VERMICULITE GRANULES WHICH HAVE BEEN PARTIALLY EXPANDED TO AT LEAST 1/3 OF THEILR FULLY EXPANDED SIZE.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |