US2668781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistick coated, steel building sheet
Assignee: Hospitality Homes
•
Filing: 1951-09-22
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Granted: 1954-02-09
•
Expires: 1971-09-22
Abstract
No abstract record available.
Inventors
- 👤 Paul W Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:32
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/64; E04B1/642; C; C09; C09D; C09D105/00; C09D105/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31656; Y10T428/31678; Y10T428/31717; Y10T428/31815; Y10T428/31819
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A BUILDING SHEET FOR ROOFING AND SIDING PURPOSES, COMPRISING A PROTECTED STEEL CORE SHEET HAVING AN OUTER PROTECTIVE WATERPROOFING, BITUMINOUS COATING CHARACTERIZED BY A NORMALLY TACKY SURFACE, AND A FILM COVERING SAID TACKY SURFACE AND COMPRISING A WATER-SOLUBLE CELLULOSE ETHER AND A PLASTICIZER THEREFOR CONSISTING OF A MONOALKYL ETHER OF A POLYALKYLENE GLYCOL, THE ALKYL GROUP HAVING-1 TO 4 CARBON ATOMS.
Claim 2
Dependent Claim
61 words
A BUILDING SHEET FOR ROOFING AND SIDING PURPOSES, COMPRISING A PROTECTED STEEL CORE SHEET HAVING AN OUTER PROTECTIVE WATERPROOFING, BITUMINOUS COATING CHARACTERIZED BY A NORMALLY TACKY SURFACE, AND A FILM COVERING SAID TACKY SURFACE AND COMPRISING A WATER-SOLUBLE CELLULOSE ETHER AND A PLASTICIZER THEREFOR CONSISTING OF A MONOALKYL ETHER OF A POLYALKYLENE GLYCOL, THE ALKYL GROUP HAVING-1 TO 4 CARBON ATOMS.
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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) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |