US3597364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical brightening and new compositions of matter
Assignee: Mitsui Toatsu Chemicals Inc
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Filing: 1969-07-17
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Granted: 1971-08-03
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Expires: 1989-07-17
Abstract
Abstract OPTICAL BRIGHTENING COMPOSITION AND BRIGHTENED PRODUCTS ARE DISCLOSED INVOLVING THE USE OF 2-STYRYLNAPHTHOXAZOLE AND VARIOUS STYRL-SUBSTITUTED DERIVATIVES. THE COMPOSITIONS ARE ESPECIALLY DIRECTED TO IMPROVING FIBERS, FABRICS, AND THE LIKE.
Inventors
- 👤 Ichiro Okubo
- 👤 Michihiro Tsujimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:06
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/14
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |