Patent US2697677A successfully refreshed from Google Patents.
US2697677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Embedded fiber wallboard
Assignee: Individual
•
Filing: 1952-03-12
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Granted: 1954-12-21
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Expires: 1972-03-12
Abstract
No abstract record available.
Inventors
- 👤 Elmendorf Armin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:06
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/16; C; C04; C04B; C04B18/00; C04B18/04; C04B18/18; C04B18/24; C04B18/26; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249932
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A NONPOROUS WALBOARD STRUCTURE HAVING A BODY FORMED OF A RELATIVELY SOLID, NONPOROUS MATRIX OF A MATERIAL SELECTED FROM THE CLASS OF INORGANIC CEMENTS INCLUDING GYPSUM, PORTLAND CEMENT AND MAGNESITE CEMENT, SAID MATRIX HAVING A PLURALITY OF WOOD STRANDS EMBEDDED THEREIN, EACH STRAND HAVING THE BOTANIC FIBERS THEREOF SUBSTANTTIALLY PARALLEL TO THE SURFACES OF THE STRAND AND GENERALLY PARALLEL TO THE STRAND LENGTH, THE WEIGHT OF SAID MATRIX EXCEEDING THE WEIGHT OF SAID STRANDS, THE LENGTH OF THE STRANDS, ON AN AVERAGE, EXCEEDING ONE-HALF IN WHILE BEING LESS THAN SIX INCHES.
Claim 2
Dependent Claim
91 words
A NONPOROUS WALBOARD STRUCTURE HAVING A BODY FORMED OF A RELATIVELY SOLID, NONPOROUS MATRIX OF A MATERIAL SELECTED FROM THE CLASS OF INORGANIC CEMENTS INCLUDING GYPSUM, PORTLAND CEMENT AND MAGNESITE CEMENT, SAID MATRIX HAVING A PLURALITY OF WOOD STRANDS EMBEDDED THEREIN, EACH STRAND HAVING THE BOTANIC FIBERS THEREOF SUBSTANTTIALLY PARALLEL TO THE SURFACES OF THE STRAND AND GENERALLY PARALLEL TO THE STRAND LENGTH, THE WEIGHT OF SAID MATRIX EXCEEDING THE WEIGHT OF SAID STRANDS, THE LENGTH OF THE STRANDS, ON AN AVERAGE, EXCEEDING ONE-HALF IN WHILE BEING LESS THAN SIX INCHES.
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) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |