US3529923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultramarine benzyl quaternary ammonium compound mixture in a granular bluing composition
Assignee: Procter and Gamble Co
•
Filing: 1967-09-21
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Granted: 1970-09-22
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Expires: 1987-09-21
Abstract
No abstract record available.
Inventors
- 👤 Ronald A Perry
- 👤 Ronald O Baukol
- 👤 Ronald L Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:06
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/06; C11D1/00; C11D1/38; C11D1/62; C11D3/046; C11D3/40; F; F27; F27B; F27B9/00; F27B9/30; F27B9/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE643539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |