US3580971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thixotropic organopolysiloxane compositions having pendant methacrylic acid polymer
Assignee: Wacker Chemical Corp
•
Filing: 1969-08-13
•
Granted: 1971-05-25
•
Expires: 1989-08-13
Abstract
Abstract POLYMETHACRYLIC ACID GRAFT MODIFIED SILOXANES WHICH EXHIBIT THIXOTROPIC PROPERTIES.
Inventors
- 👤 John Charles Getson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:15
CPC Classifications
C; C08; C08F; C08F290/00; C08F290/08; C08F290/14; C08F290/148
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |