US2804400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood coating method and products thereof
Assignee: Dow Chemical Co
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Filing: 1956-02-08
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Granted: 1957-08-27
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Expires: 1976-02-08
Abstract
No abstract record available.
Inventors
- 👤 Harold C Kelly
- 👤 Edward J Heiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:55
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/50; A63B59/52; A63D; A63D9/00; A63B2102/00; A63B2102/18; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31591
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
A METHOD FOR PROTECTIVELY COATING WOODEN SURFACES AND ARTICLES TO PROVIDE THEM WITH AN INCREASED RESISTANCEE TO BREAKAGE WHICH COMPRISES INTIALLY APPLYING A LAYER OF A POLYISOCYANATE-CONTAINING ETHYL CELLULOSE TO THE BARE WOODEN SURFACE; AND SUBSEQUENTLY APPLYING AN ETHYL CELLULOSE LAYER OVER THE INITIAL LAYER BY DIP APPLICATION OF AN ETHYL CELLULOSE GEL LACQUER FORMULATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |