Patent US2899352A successfully refreshed from Google Patents.
US2899352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of structural board from
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
•
Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:45
CPC Classifications
D; D21; D21C; D21C5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN THE PRODUCTION OF A STRUCTURE BOARD, WHEREIN RUMEN IS UTILIZED AS A MAJOR INGREDIENT THEREOF, THE METHOD WHICH COMPRISES: FORMING A SLURRY OF STOCK, SAID STOCK INCLUDING AS A MAJOR INGREDIENT THEREOF RUMEN; FELTING THE SAID STOCK WHEREBY A MAT OF FIBER BUNDLES IS FORMED, SAID MAT BEING SUITABLE FOR COMPRESSING; AND THEREAFTER PRESSING SAID FELTED MAT UNDER PRESSURES NOT EXCEEDING 300 POUNDS PER SQUARE INCH.
Claim 2
Dependent Claim
67 words
IN THE PRODUCTION OF A STRUCTURE BOARD, WHEREIN RUMEN IS UTILIZED AS A MAJOR INGREDIENT THEREOF, THE METHOD WHICH COMPRISES: FORMING A SLURRY OF STOCK, SAID STOCK INCLUDING AS A MAJOR INGREDIENT THEREOF RUMEN; FELTING THE SAID STOCK WHEREBY A MAT OF FIBER BUNDLES IS FORMED, SAID MAT BEING SUITABLE FOR COMPRESSING; AND THEREAFTER PRESSING SAID FELTED MAT UNDER PRESSURES NOT EXCEEDING 300 POUNDS PER SQUARE INCH.
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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) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |