Patent US3250774A successfully refreshed from Google Patents.
US3250774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazines and process for their manufacture
Assignee: BASF Corp
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Filing: 1963-06-18
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Granted: 1966-05-10
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Expires: 1983-06-18
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Paul
- 👤 Eichenberger Kurt
- 👤 Rossi Albert
- 👤 Wilhelm Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:38
CPC Classifications
C; C07; C07D; C07D241/00; C07D241/36; C07D241/38; C07D241/40; C07D241/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A PROCESS FOR THE MANUFACTURE OF 1:4-DIAZINES WHICH COMPRISES INTROMOLECULARLY CONDENSING A CYCLIC COMPOUND, WHICH CARRIES AT A RING-CARBON ATOM A THIOOXAMOYLAMINO GROUP AND AT A CARBON ATOM ADJACENT TO THE CARBON ATOM CARRYING SAID THIOOXAMOYLAMINO GROUP A MONO-SUBSTITUTED AMINO GROUP BY TREATMENT WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF HEAT AND AN ACIDIC AGENT.
Claim 2
Dependent Claim
59 words
A PROCESS FOR THE MANUFACTURE OF 1:4-DIAZINES WHICH COMPRISES INTROMOLECULARLY CONDENSING A CYCLIC COMPOUND, WHICH CARRIES AT A RING-CARBON ATOM A THIOOXAMOYLAMINO GROUP AND AT A CARBON ATOM ADJACENT TO THE CARBON ATOM CARRYING SAID THIOOXAMOYLAMINO GROUP A MONO-SUBSTITUTED AMINO GROUP BY TREATMENT WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF HEAT AND AN ACIDIC AGENT.
Claim 3
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 4
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |