Patent US2721848A successfully refreshed from Google Patents.
US2721848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paint removing process and composition
Assignee: Wyeth Holdings LLC
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Filing: 1951-09-25
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Granted: 1955-10-25
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Expires: 1971-09-25
Abstract
No abstract record available.
Inventors
- 👤 Emil A Vitalis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:26
CPC Classifications
C; C09; C09D; C09D9/00; C09D9/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A METHOD OF SOFTENING DRIED PAINT WHICH COMPRISES APPLYING THERETO A 2-50% SOLUTION IN A LIQUID VOLATILE ORGANIC SOLVENT OF AN ETHYLENE OXIDE CONDENSATION PRODUCT OF AN ALIPHATIC GUANIDINIUM N-ALIPHATIC CARBAMATE IN WHICH THE ALIPHATIC RADICALS CONTAIN 4 TO 18 CARBON ATOMS, SAID CONDENSATION PRODUCT CONTAINING ABOUT 1-25 MOLS OF COMBINED ETHYLENE OXIDE FOR EACH MOL OF AMINE COMBINED IN SAID CARBAMATE.
Claim 2
Independent Claim
62 words
A METHOD OF SOFTENING DRIED PAINT WHICH COMPRISES APPLYING THERETO A 2-50% SOLUTION IN A LIQUID VOLATILE ORGANIC SOLVENT OF AN ETHYLENE OXIDE CONDENSATION PRODUCT OF AN ALIPHATIC GUANIDINIUM N-ALIPHATIC CARBAMATE IN WHICH THE ALIPHATIC RADICALS CONTAIN 4 TO 18 CARBON ATOMS, SAID CONDENSATION PRODUCT CONTAINING ABOUT 1-25 MOLS OF COMBINED ETHYLENE OXIDE FOR EACH MOL OF AMINE COMBINED IN SAID CARBAMATE.
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) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |