US2546474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing asbestoscontaining material
Assignee: Rhone Poulenc SA
•
Filing: 1949-05-23
•
Granted: 1951-03-27
•
Expires: 1969-05-23
Abstract
No abstract record available.
Inventors
- 👤 Peyrot Pierre Pascal
- 👤 Chevalier Pierre Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:35
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/495; C04B41/4961
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PROCESS FOR THE PRODUCTION OF MATERIALS CONTAINING ASBESTOS WHICH COMPRISES IMPREGNATING ASBESTOS WITH METHYLSILOXANIC RESIN AND HEATING THE IMPREGNATED- MASS AT A TEMPERATURE OF 300-500* C.
Claim 2
Dependent Claim
27 words
A PROCESS FOR THE PRODUCTION OF MATERIALS CONTAINING ASBESTOS WHICH COMPRISES IMPREGNATING ASBESTOS WITH METHYLSILOXANIC RESIN AND HEATING THE IMPREGNATED- MASS AT A TEMPERATURE OF 300-500* C.
References Cited (Backward Citations)
US2258220A
Cited
US2371050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |