Patent US3219632A successfully refreshed from Google Patents.
US3219632A
Expired / Lapsed
US
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Water soluble carbamate-formaldehyde condensate
Assignee: Individual
•
Filing: 1962-10-17
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Granted: 1965-11-23
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Expires: 1982-10-17
Abstract
No abstract record available.
Inventors
- 👤 Jr John G Frick
- 👤 Richard L Arceneaux
- 👤 Reid John David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:47
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/127; C; C07; C07C; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/16; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/20; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
THE WATER SOLUBLE CARBAMATE-FORMALDEHYDE CONDENSATE FORMED BY REACTING AT ROOM TEMPERATURE IN AQUEOUS ALKALINE SOLUTION AND IN A MOLE RATIO OF 2 TO 1, FORMALDEHYDE AND A COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
32 words
THE WATER SOLUBLE CARBAMATE-FORMALDEHYDE CONDENSATE FORMED BY REACTING AT ROOM TEMPERATURE IN AQUEOUS ALKALINE SOLUTION AND IN A MOLE RATIO OF 2 TO 1, FORMALDEHYDE AND A COMPOUND REPRESENTED BY THE FORMULA
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |