Patent US2813080A successfully refreshed from Google Patents.
US2813080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid concentrates of metal deactivators
Assignee: EIDP Inc
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Filing: 1956-10-08
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Granted: 1957-11-12
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Expires: 1976-10-08
Abstract
No abstract record available.
Inventors
- 👤 Philip L Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:56
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/228; C10L1/2283
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A LIQUID CONCENTRATE OF HIGH STABILITY TO CRYSTALLIZATION WHICH CONSISTS ESSENTIALLY OF FROM ABOUT 60% TO ABOUT 80% BY WEIGHT OF AN N,N''-DISALICYLIDENE-POLYAMINE WHICH IS THE CONDENSATION PRODUCT OF 2 MOLS OF SALICYLALDEHYDE WITH 1 MOL OF A MEMBER OF THE GROUP CONSISTING OF 1,2PROPYLENEDIAMINE AND MIXTURES OF 1,2-PROPYLENEDIAMINE WITH UP TO ABOUT 10 MOL % OF DIETHYLENETRIAMINE, FROM ABOUT 0.5% TO ABOUT 10% BY WEIGHT OF O-HYDROXYACETOPHENONE WHICH IS PRESENT AS AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF FREE O-HYDROXYACETOPHENONE AND O-HYDROXYACETOPHENONE RADICIALS REPLACING AT LEAST ONE SALICYLALDEHYDE RADICAL OF A PORTION OF THE SAID N,N''-DISALICYLIDENE-POLYAMINE, AND A SOLVENT OF THE GROUP CONSISTING OF NORMALLY LIQUID MONONUCLEAR AROMATIC HYDROCARBONS AND MIXTURES THEREOF WITH LOWER ALKYLPHENOLS, SAID HYDROCARBONS CONSTITUTING AT LEAST 10% BY WEIGHT OF THE CONCENTRATE AND SAID ALKYLPHENOLS, WHEN PRESENT, CONSTITUTING UP TO ABOUT 60% BY WEIGHT OF THE CONCENTRATE.
Claim 2
Dependent Claim
144 words
A LIQUID CONCENTRATE OF HIGH STABILITY TO CRYSTALLIZATION WHICH CONSISTS ESSENTIALLY OF FROM ABOUT 60% TO ABOUT 80% BY WEIGHT OF AN N,N''-DISALICYLIDENE-POLYAMINE WHICH IS THE CONDENSATION PRODUCT OF 2 MOLS OF SALICYLALDEHYDE WITH 1 MOL OF A MEMBER OF THE GROUP CONSISTING OF 1,2PROPYLENEDIAMINE AND MIXTURES OF 1,2-PROPYLENEDIAMINE WITH UP TO ABOUT 10 MOL % OF DIETHYLENETRIAMINE, FROM ABOUT 0.5% TO ABOUT 10% BY WEIGHT OF O-HYDROXYACETOPHENONE WHICH IS PRESENT AS AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF FREE O-HYDROXYACETOPHENONE AND O-HYDROXYACETOPHENONE RADICIALS REPLACING AT LEAST ONE SALICYLALDEHYDE RADICAL OF A PORTION OF THE SAID N,N''-DISALICYLIDENE-POLYAMINE, AND A SOLVENT OF THE GROUP CONSISTING OF NORMALLY LIQUID MONONUCLEAR AROMATIC HYDROCARBONS AND MIXTURES THEREOF WITH LOWER ALKYLPHENOLS, SAID HYDROCARBONS CONSTITUTING AT LEAST 10% BY WEIGHT OF THE CONCENTRATE AND SAID ALKYLPHENOLS, WHEN PRESENT, CONSTITUTING UP TO ABOUT 60% BY WEIGHT OF THE CONCENTRATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |