Patent US3267188A successfully refreshed from Google Patents.
US3267188A
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Method for forming composite board
Assignee: Weyerhaeuser Co
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Filing: 1964-03-09
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Granted: 1966-08-16
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Expires: 1984-03-09
Abstract
No abstract record available.
Inventors
- 👤 Kendall H Bassett
- 👤 Edward M Williston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:27
CPC Classifications
B; B27; B27N; B27N7/00; B27N3/00; B27N3/002; B27N3/08; C; C08; C08L; C08L97/00; C08L97/02; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR FORMING COMPOSITE BOARDS, COMPRISING THE STEPS OF; MIXING COMMINUTED WOOD AND BINARY RESIN BINDER SYSTEM CONSISTING OF FROM 1 TO 20 PARTS OF A GREEN PHENOLIC RESIN TO 1 PART OF AN ADVANCED PHENOLIC RESIN; PRESSING THE COMMINUTED WOOD AND BINARY RESIN BINDER SYSTEM UNDER HEAT AND PRESSURE A SUFFICIENT LENGTH OF TIME TO PARTIALLY CURE THE BINARY BINDER SYSTEM; THEN, HEAT TREATING THE COMPOSITE BOARD A SUFFICIENT LENGTH OF TIME TO CURE THE BINDER SYSTEM TO FORM A COMPOSITE BOARD.
Claim 2
Dependent Claim
84 words
A PROCESS FOR FORMING COMPOSITE BOARDS, COMPRISING THE STEPS OF; MIXING COMMINUTED WOOD AND BINARY RESIN BINDER SYSTEM CONSISTING OF FROM 1 TO 20 PARTS OF A GREEN PHENOLIC RESIN TO 1 PART OF AN ADVANCED PHENOLIC RESIN; PRESSING THE COMMINUTED WOOD AND BINARY RESIN BINDER SYSTEM UNDER HEAT AND PRESSURE A SUFFICIENT LENGTH OF TIME TO PARTIALLY CURE THE BINARY BINDER SYSTEM; THEN, HEAT TREATING THE COMPOSITE BOARD A SUFFICIENT LENGTH OF TIME TO CURE THE BINDER SYSTEM TO FORM A COMPOSITE BOARD.
References Cited (Backward Citations)
CA556510A
Cited
US2413729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |