US2677658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of waterproof products
Assignee: Rhone Poulenc SA
•
Filing: 1950-10-30
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Granted: 1954-05-04
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Expires: 1970-10-30
Abstract
No abstract record available.
Inventors
- 👤 Bidaud Auguste Florentin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:36
CPC Classifications
C; C10; C10M; C10M7/00; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C08; C08K; C08K3/00; C08K3/34; C08K3/36; C10M2201/00; C10M2201/10; C10M2201/105; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/05; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17; C10N2050/00; C10N2050/08; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
PROCESS FOR THE PRODUCTION OF WATERPROOF PRODUCTS WHICH COMPRISES MIXING A LIQUID POLYMER OF AN ORGANO SILICONE WHEREIN EACH ORGANO GROUP IS A METHYL RADICAL WITH SILICON DIOXIDE, THE LATTER BEING IN THE FORM OF AN EMPALPABLE POWDER AND FORMING AT LEAST 25% BY WEIGHT OF THE MIXTURE, STORING THE MIXTURE FOR A PERIOD OF AT LEAST ONE WEEK AT ROOM TEMPERATURE AND THEREAFTER WORKING THE MIXTURE UNTIL IT IS CONVERTED AT LEAST TO THE CONSISTENCY OF A SMOOTH PASTE.
Claim 2
Dependent Claim
80 words
PROCESS FOR THE PRODUCTION OF WATERPROOF PRODUCTS WHICH COMPRISES MIXING A LIQUID POLYMER OF AN ORGANO SILICONE WHEREIN EACH ORGANO GROUP IS A METHYL RADICAL WITH SILICON DIOXIDE, THE LATTER BEING IN THE FORM OF AN EMPALPABLE POWDER AND FORMING AT LEAST 25% BY WEIGHT OF THE MIXTURE, STORING THE MIXTURE FOR A PERIOD OF AT LEAST ONE WEEK AT ROOM TEMPERATURE AND THEREAFTER WORKING THE MIXTURE UNTIL IT IS CONVERTED AT LEAST TO THE CONSISTENCY OF A SMOOTH PASTE.
References Cited (Backward Citations)
US2428608A
Cited
US2460795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |