US2636836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of covering an irregular surface
Assignee: Acordis UK Ltd
•
Filing: 1949-12-22
•
Granted: 1953-04-28
•
Expires: 1969-12-22
Abstract
No abstract record available.
Inventors
- 👤 Whigham George Hay
- 👤 Miller Brian Edward Merriman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:54
CPC Classifications
E; E04; E04D; E04D7/00; B; B29; B29C; B29C63/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
METHOD OF PROTECTING CONCRETE, WOODEN AND OTHER IRREGULAR STRUCTURAL SURFACES, COMPRISING APPLYING DIRECTLY TO THE IRREGULAR SURFACE TO BE PROTECTED A PREFORMED SHEET OF A THERMOPLASTIC CELLULOSE DERIVATIVE, POURING HOT MOLTEN ASPHALT ON TO SAID SHEET SO THAT THE SHEET IS SOFTENED BY THE HEAT OF SAID ASPHALT AND ASSUMES THE CONFIGURATION OF SAID SURFACE, AND ALLOWING THE ASSEMBLY TO COOL TO SOLIDIFY THE ASPHALT AS A SURFACE ON THE COHERENT CELLULOSE DERIVATIVE SHEET.
Claim 2
Dependent Claim
74 words
METHOD OF PROTECTING CONCRETE, WOODEN AND OTHER IRREGULAR STRUCTURAL SURFACES, COMPRISING APPLYING DIRECTLY TO THE IRREGULAR SURFACE TO BE PROTECTED A PREFORMED SHEET OF A THERMOPLASTIC CELLULOSE DERIVATIVE, POURING HOT MOLTEN ASPHALT ON TO SAID SHEET SO THAT THE SHEET IS SOFTENED BY THE HEAT OF SAID ASPHALT AND ASSUMES THE CONFIGURATION OF SAID SURFACE, AND ALLOWING THE ASSEMBLY TO COOL TO SOLIDIFY THE ASPHALT AS A SURFACE ON THE COHERENT CELLULOSE DERIVATIVE SHEET.
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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) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |