Patent US3140288A successfully refreshed from Google Patents.
US3140288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclodisilazane compounds
Assignee: 3M Co
•
Filing: 1962-02-02
•
Granted: 1964-07-07
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Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
- 👤 John S Peake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:36
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/10; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4085
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE FORMULA:
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA:
Claim 3
Dependent Claim
20 words
IN A METHOD FOR PREPARING SUBSTITUTED CYCLODISILAZANE COMPOUNDS, THE STEP OF REACTING IN LIQUID PHASE A HYDROSILANE OF THE FORMULA:
Claim 4
Dependent Claim
20 words
IN A METHOD FOR PREPARING SUBSTITUTED CYCLODISILAZANE COMPOUNDS, THE STEP OF REACTING IN LIQUID PHASE A HYDROSILANE OF THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |