US3671377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rigid composite products and process for the preparation thereof
Assignee: Individual
•
Filing: 1970-07-29
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Granted: 1972-06-20
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Expires: 1990-07-29
Abstract
Abstract A PROCESS FOR THE PREPARATION OF RIGID COMPOSITE PROUCTS WITH SIMILAR PHYSICAL CHARACTERISTCS IN ALL DIMENSIONS OR DIRECTIONS FROM A THREE DIMENSIONAL SKELETAL STRUCTURE FORMED OF RANDOMLY ORIENTED ELONGATE STICKS WITH MULTIPLE FIBROUS PROJECTIONS WHICH MAINTAIN THE ELONGATE STICKS IN A LOOSELY COHESIVE MASS WHICH IS SHAPED OR MOLDED AND MADE RIGID WITH A BINDER IS DESCRIBED. VARIOUS LIQUID BINDERS BOTH ORGANIC AND INORGANIC ARE USED WHICH DO NOT REQUIRE COMPRESSION OF THE COHESIVE MASS AND LIQUID BINDER IN ORGER TO BE HARDENED AND DEVELOP BOND STRENGTH FOR CONSOLIDATING THE PRODUCT INTO FORMED OR MOLDED SHAPES.
Inventors
- 👤 Alan A Marra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:39
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/16; B; B27; B27N; B27N3/00; B27N3/005; B27N5/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |