Patent US3471576A successfully refreshed from Google Patents.
US3471576A
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Paraformaldehyde phenolic compositions
Assignee: Bayer AG
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Filing: 1965-11-15
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Granted: 1969-10-07
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Expires: 1985-11-15
Abstract
No abstract record available.
Inventors
- 👤 Herbert Klesper
- 👤 Fritz Steinfatt
- 👤 Klaus Langheinrich
- 👤 Walter Lorenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:38
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; A; A01; A01N; A01N33/00; A01N33/02; A01N33/08; A01N33/10; C08G8/04; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/02; C10M2209/00; C10M2209/10; C10M2209/101; C10M2213/00; C10M2213/04; C10M2213/06; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2040/00; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/015; C10N2050/02; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T442/00; Y10T442/20; Y10T442/2525
Claims Analysis
Total Claims: 0
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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) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |