Patent US2655458A successfully refreshed from Google Patents.
US2655458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming wood wool panels
Assignee: Tectum Corp
•
Filing: 1951-11-01
•
Granted: 1953-10-13
•
Expires: 1971-11-01
Abstract
No abstract record available.
Inventors
- 👤 Howard W Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:57
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/52; B28B1/525
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE METHOD OF FORMING A PANEL OF WOOD WOOL AND MAGNESIUM CEMENT RAPIDLY AND CONTINUOUSLY, WHICH CONSISTS OF FORMING A LAYER OF WOOD WOOL IMPREGNATED WITH WATER BORNE MAGNESIUM OXIDE AND MAGNESIUM SALTS OF THE GROUP OF SULPHATE AND CHLORIDE, CONTINUOUSLY PASSING THE LAYER THROUGH A CURRENT OF HEATED AIR AND THEN PASSING THE LAYER BETWEEN CONTINUOUSLY MOVING COMPRESSING SURFACES, THE TEMPERATURE OF THE HEATED AIR BEING SUCH THAT THE CEMENT WILL SET SUFFICIENTLY TO HOLD THE LAYER AGAINST EXPANSION WHILE THE LAYER IS BETWEEN THE COMPRESSING SURFACES.
Claim 2
Independent Claim
88 words
THE METHOD OF FORMING A PANEL OF WOOD WOOL AND MAGNESIUM CEMENT RAPIDLY AND CONTINUOUSLY, WHICH CONSISTS OF FORMING A LAYER OF WOOD WOOL IMPREGNATED WITH WATER BORNE MAGNESIUM OXIDE AND MAGNESIUM SALTS OF THE GROUP OF SULPHATE AND CHLORIDE, CONTINUOUSLY PASSING THE LAYER THROUGH A CURRENT OF HEATED AIR AND THEN PASSING THE LAYER BETWEEN CONTINUOUSLY MOVING COMPRESSING SURFACES, THE TEMPERATURE OF THE HEATED AIR BEING SUCH THAT THE CEMENT WILL SET SUFFICIENTLY TO HOLD THE LAYER AGAINST EXPANSION WHILE THE LAYER IS BETWEEN THE COMPRESSING SURFACES.
References Cited (Backward Citations)
FR624317A
Cited
US1990554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |