US2708643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-resistant fiber board
Assignee: Johns Manville Corp
•
Filing: 1952-11-01
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Granted: 1955-05-17
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Expires: 1972-11-01
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Page
- 👤 David R P Haig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:22
CPC Classifications
D; D21; D21J; D21J1/00; D21J1/08; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/277
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
10. A FLAME-RESISTANT, DECORATIVE FINISHED STRUCTURAL PANEL COMPRISING A FIBER INSULATING BOARD HAVING AT LEAST ONE MAJOR SURFACE COATED WITH A PRIMING COATING COMPRISING A CLAY HAVING THE CLAY CHARACTERISTICS OF MISSISSIPPI M & D CLAY, IN AMOUNT SUFFICIENT TO DEPOSIT AT LEAST APPROXIMATELY 10 LBS. OF CLAY SOLIDS PER 1000 SQUARE FEET OF SURFACE TREATED, AND DECORATIVE PAINT COATING SUPERIMPOSED ON SAID PRIMING COATING.
Claim 2
Dependent Claim
65 words
10. A FLAME-RESISTANT, DECORATIVE FINISHED STRUCTURAL PANEL COMPRISING A FIBER INSULATING BOARD HAVING AT LEAST ONE MAJOR SURFACE COATED WITH A PRIMING COATING COMPRISING A CLAY HAVING THE CLAY CHARACTERISTICS OF MISSISSIPPI M & D CLAY, IN AMOUNT SUFFICIENT TO DEPOSIT AT LEAST APPROXIMATELY 10 LBS. OF CLAY SOLIDS PER 1000 SQUARE FEET OF SURFACE TREATED, AND DECORATIVE PAINT COATING SUPERIMPOSED ON SAID PRIMING COATING.
References Cited (Backward Citations)
US2322887A
Cited
US2322888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |