US3483182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lower alkoxyphenylazo - 1 - phenyl-3-carboxy-5-pyrazolone dyes containing substituted on the alkoxyphenyl group the sulfuric acid ester of a beta-hydroxyethyl sulfone group
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1966-11-14
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Granted: 1969-12-09
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Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Hiroshi Sugiyama
- 👤 Masakazu Yamamoto
- 👤 Hideo Otsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:48
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/503; C09B62/507; C09B62/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2670265A
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US2195390A
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US2728762A
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US2842537A
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US3170912A
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US3234207A
Cited
US3385843A
Cited
US3379715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |