US2716617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Felted fibrous cellulosic structural board having rigidified portion and method of making same
Assignee: JAM WICHITA
•
Filing: 1951-02-07
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Granted: 1955-08-30
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Expires: 1971-02-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert F Austin
- 👤 John M Morrison
- 👤 Frank C Campins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:29
CPC Classifications
D; D21; D21J; D21J1/00; D21J1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964; Y10T428/249965; Y10T428/31504; Y10T428/31725; Y10T428/31768; Y10T428/31772; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31942; Y10T428/31949; Y10T428/4935; Y10T428/662
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR PREPARING A RIGIDIFIED, FIBROUS, FELTED, CELLULOSIC, STRUCTURAL BOARD WHICH COMPRISES APPLYING TO SURFACE PORTIONS OF A PREFORMED, POROUS, SOFT BOARD A SUFFICIENT AMOUNT OF A HIGH PENETRATING SMALL PARTICLE SIZE, LOW VISCOSITY, AND HIGH SOLIDS CONCENTRATION RESIN DISPERSION TO PRODUCE UPON DRYING IN SAID BOARD A RIGID PORTION, EXTENDING FROM THE SURFACE INWARDLY FOR A SUBSTANTIAL DEPTH IN THE AREA OF SAID APPLICATION.
Claim 2
Dependent Claim
66 words
A PROCESS FOR PREPARING A RIGIDIFIED, FIBROUS, FELTED, CELLULOSIC, STRUCTURAL BOARD WHICH COMPRISES APPLYING TO SURFACE PORTIONS OF A PREFORMED, POROUS, SOFT BOARD A SUFFICIENT AMOUNT OF A HIGH PENETRATING SMALL PARTICLE SIZE, LOW VISCOSITY, AND HIGH SOLIDS CONCENTRATION RESIN DISPERSION TO PRODUCE UPON DRYING IN SAID BOARD A RIGID PORTION, EXTENDING FROM THE SURFACE INWARDLY FOR A SUBSTANTIAL DEPTH IN THE AREA OF SAID APPLICATION.
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) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |