US3197536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing asbestoscement articles
Assignee: Johns Manville Corp
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Filing: 1962-02-26
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Granted: 1965-07-27
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Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 Clayton V French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:08
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/003; B28B11/08; B28B11/0818; B28B11/0827; Y; Y10; Y10S; Y10S264/00; Y10S264/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD OF CREATING SHARP BENDS IN GREEN ASBESTOSCEMENT SHEETS COMPRISING FORMING A CRIMP IN A GREEN SHEET OF ASBESTOS FIBER AND CEMENT, THE SIDES OF THE CRIMP BEING CURVED ABOUT RADII OF CURVATURE OF AT LEAST APPROXIMATELY ONE INCH, PLACING THE CRIMPED SHEET ON A FORM HAVING A BEND THEREON, THE INCLUDED ANGLE FORMED BY THE SIDES OF THE BEND BEING GREATER THAN 0* BUT LESS THAN 180*, THE CRIMP BEING ADJACENT THE BEND, STRAIGHTENING THE CURVED SIDES OF THE CRIMP, THE CRIMPED PORTION OF THE SHEET CONFORMING CLOSELY TO THE BEND ON THE FORM,
Claim 2
Independent Claim
96 words
A METHOD OF CREATING SHARP BENDS IN GREEN ASBESTOSCEMENT SHEETS COMPRISING FORMING A CRIMP IN A GREEN SHEET OF ASBESTOS FIBER AND CEMENT, THE SIDES OF THE CRIMP BEING CURVED ABOUT RADII OF CURVATURE OF AT LEAST APPROXIMATELY ONE INCH, PLACING THE CRIMPED SHEET ON A FORM HAVING A BEND THEREON, THE INCLUDED ANGLE FORMED BY THE SIDES OF THE BEND BEING GREATER THAN 0* BUT LESS THAN 180*, THE CRIMP BEING ADJACENT THE BEND, STRAIGHTENING THE CURVED SIDES OF THE CRIMP, THE CRIMPED PORTION OF THE SHEET CONFORMING CLOSELY TO THE BEND ON THE FORM,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |