Patent US2099760A successfully refreshed from Google Patents.
US3000688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for vatting of vat dyestuffs
Assignee: —
•
Filing: —
•
Granted: 1961-09-19
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Expires: 1978-09-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:33
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
IN THE PROCESS FOR THE REDUCTION OF VAT DYESTUFFS THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS THE REDUCING AGENT A BOROHYDRIDE IN THE PRESENCE OF A COMPOUND OF TETRAVALENT SULFUR.
Claim 2
Dependent Claim
29 words
IN THE PROCESS FOR THE REDUCTION OF VAT DYESTUFFS THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS THE REDUCING AGENT A BOROHYDRIDE IN THE PRESENCE OF A COMPOUND OF TETRAVALENT SULFUR.
References Cited (Backward Citations)
US2304502A
Cited
US2745788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |