US2855381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxane amides
Assignee: Dow Silicones Corp
•
Filing: 1955-07-18
•
Granted: 1958-10-07
•
Expires: 1975-07-18
Abstract
No abstract record available.
Inventors
- 👤 Leo H Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:00
CPC Classifications
C; C08; C08G; C08G77/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
A POLYMERIC SILOXANE OF THE UNIT FORMULA
Claim 2
Dependent Claim
7 words
A POLYMERIC SILOXANE OF THE UNIT FORMULA
Claim 3
Independent Claim
27 words
A METHOD FOR THE PREPARATION OF ORGANOPOLYSILOX ANE AMIDES AMIDES WHICH COMPRISES DISSOLVING AN ORGANOSILICON NITRILE SELECTED FROM THE GROUP CON SISTING OF NITRILES OF THE FORMULA
Claim 4
Independent Claim
27 words
A METHOD FOR THE PREPARATION OF ORGANOPOLYSILOX ANE AMIDES AMIDES WHICH COMPRISES DISSOLVING AN ORGANOSILICON NITRILE SELECTED FROM THE GROUP CON SISTING OF NITRILES OF THE FORMULA
References Cited (Backward Citations)
US2607793A
Cited
US2723987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |