US2658908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrolyzable siloxanes
Assignee: Wacker Chemie AG
•
Filing: 1951-06-21
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Granted: 1953-11-10
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Expires: 1971-06-21
Abstract
No abstract record available.
Inventors
- 👤 Nitzsche Siegfried
- 👤 Pirson Ewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:58
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
THE METHOD FOR THE PRODUCTION OF SILOXANES WHICH CONTAIN SUBSTITUENTS OF THE GROUP CONSISTING OF ALKOXY, ARYLOXY AND ACYLOXY WHICH COMPRISES MAINTAINING (1) SILOXANE OF THE GENERAL AVERAGE GENERAL FORMULA
Claim 2
Independent Claim
30 words
THE METHOD FOR THE PRODUCTION OF SILOXANES WHICH CONTAIN SUBSTITUENTS OF THE GROUP CONSISTING OF ALKOXY, ARYLOXY AND ACYLOXY WHICH COMPRISES MAINTAINING (1) SILOXANE OF THE GENERAL AVERAGE GENERAL FORMULA
References Cited (Backward Citations)
US2537073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |