Patent US2905713A successfully refreshed from Google Patents.
US2905713A
Expired / Lapsed
US
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Carbodiimides
Assignee: Bayer AG
•
Filing: 1956-12-28
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Granted: 1959-09-22
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Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Erich
- 👤 Wamsler Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:10
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/14; C07D251/16; C07C; C07C267/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE PROCESS WHICH COMPRISES CONTACTING IN THE PRESENCE OF CUPROUS CHLORIDE AND AT A TEMPERATURE NOT EXCEEDING 35*C. AN EXCESS OF AN AQEOUS SOLUTION OF AN ALKALI METAL HALITE WITH A THIOCARBAMIDE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
36 words
THE PROCESS WHICH COMPRISES CONTACTING IN THE PRESENCE OF CUPROUS CHLORIDE AND AT A TEMPERATURE NOT EXCEEDING 35*C. AN EXCESS OF AN AQEOUS SOLUTION OF AN ALKALI METAL HALITE WITH A THIOCARBAMIDE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2656383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |