US3206346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treatment of porous wallboard
Assignee: Individual
•
Filing: 1961-03-21
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Granted: 1965-09-14
•
Expires: 1981-03-21
Abstract
No abstract record available.
Inventors
- 👤 Nuorivaara Ensio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:58
CPC Classifications
B; B27; B27N; B27N7/00; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/16; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
A METHOD OF TREATING A POROUS FIBRE BOARD OF DETERMINABLE THICKNESS, SAID METHOD COMPRISING DEFORMING THE INTERNAL STRUCTURE OF THE BOARD BY ADVANCING SAID BOARD BETWEEN A PAIR OF ROLLERS WHICH ARE SPACED APART A DISTANCE WHICH IS LESS THAN ONE HALF THE THICKNESS OF THE BOARD WHEREBY SAID BOARD IS MOMENTARILY AND TEMPORARILY COMPRESSED TO A THICKNESS LESS THAN ONE HALF THE ORIGINAL THICKNESS OF THE BOARD AS THE BOARD PASSES BETWEEN THE ROLLERS, AND ALLOWING SAID BOARD TO ASSUME SUBSTANTIALLY ITS ORIGINAL THICKNESS AFTER IT PASSES THROUGH SAID ROLLERS, THE DEFORMING OF THE INTERNAL STRUCTURE OF THE BOARD UNDER THE COMPRESSION OF THE ROLLERS AND THE SUBSEQUENT ASSUMPTION OF ITS ORIGINAL THICKNESS CONFERRING ON SAID FIBRE BOARD DIMENSIONAL STABILITY WHEN EXPOSED TO VARYING HUMIDITY CONDITIONS.
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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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |