US3542904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition with antistatic properties comprising graft copolymer and a polypropylene glycol
Assignee: Bayer AG
•
Filing: 1969-03-17
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Granted: 1970-11-24
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Expires: 1989-03-17
Abstract
No abstract record available.
Inventors
- 👤 Hans Weitzel
- 👤 Harold Ebneth
- 👤 Karl Dinges
- 👤 Karl-Heinz Ott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08F; C08F265/00; C08F265/04; C08F279/00; C08F279/02; C08F279/04; C08L; C08L51/00; C08L51/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3450794A
Cited
US3354108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |