US3467600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination optical brightener for terephthalic acid polyester fibers
Assignee: Novartis Corp
•
Filing: 1968-07-24
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Granted: 1969-09-16
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Expires: 1988-07-24
Abstract
No abstract record available.
Inventors
- 👤 Reinhard Zweidler
- 👤 Max Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:21
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/60; D06L4/614; D06L4/636; D06L4/65; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/2971; Y10T442/00; Y10T442/20; Y10T442/2582; Y10T442/2861
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3366575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |