US2811515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lakes and the production thereof
Assignee: Novartis AG
•
Filing: 1956-01-27
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Granted: 1957-10-29
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Expires: 1976-01-27
Abstract
No abstract record available.
Inventors
- 👤 Stocker Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:54
CPC Classifications
C; C09; C09B; C09B63/00; C09B63/005; Y; Y10; Y10S; Y10S534/00; Y10S534/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE LAKE OF A MONOAZO COMPOUND HAVING THE FORMULA: WHEREIN ONE OF X1 AND X2 IS SO3H AND THE OTHER IS SELECTED FROM THE GROUP CONSISTING OF SO3H AND COOH, R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF H, CH3 AND CL, B REPRESENTS AN AROMATIC RADICAL CONTAINING AT LEAST ONE SIX-MEMBERED CARBOCYCLIC NUCLEUS AND AT MOST TWO SUCH NUCLEI CONDENSED WITH ONE ANOTHER, WITH A POLYVALENT METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM, STRONTIUM, BARIUM, ALUMINIUM, ZIRCONIUM, TIN AND MANGANESE.
Claim 2
Dependent Claim
84 words
THE LAKE OF A MONOAZO COMPOUND HAVING THE FORMULA: WHEREIN ONE OF X1 AND X2 IS SO3H AND THE OTHER IS SELECTED FROM THE GROUP CONSISTING OF SO3H AND COOH, R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF H, CH3 AND CL, B REPRESENTS AN AROMATIC RADICAL CONTAINING AT LEAST ONE SIX-MEMBERED CARBOCYCLIC NUCLEUS AND AT MOST TWO SUCH NUCLEI CONDENSED WITH ONE ANOTHER, WITH A POLYVALENT METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM, STRONTIUM, BARIUM, ALUMINIUM, ZIRCONIUM, TIN AND MANGANESE.
References Cited (Backward Citations)
US1951298A
Cited
US2070104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |