Patent US4258278A successfully refreshed from Google Patents.
Patent US2955057A successfully refreshed from Google Patents.
US2955057A
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Condensation products of formaldehyde with levulinic hydantion
Assignee: Argus Chemical Corp
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Filing: 1957-05-27
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Granted: 1960-10-04
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Expires: 1977-05-27
Abstract
No abstract record available.
Inventors
- 👤 Domenick D Gagliardi
- 👤 Jr William J Jutras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:35
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D233/76; C08; C08G; C08G12/00; C08G12/02; C08G12/26; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS FOR CREASE-PROOFING TEXTILES BY PADDING THE FABRIC IN A 10-20% AQUEOUS SOLUTION OF THE DIMETHYLOL DERIVATIVE OF THE LEVULINIC HYDANTOIN OF THE FORMULA
Claim 2
Dependent Claim
25 words
A PROCESS FOR CREASE-PROOFING TEXTILES BY PADDING THE FABRIC IN A 10-20% AQUEOUS SOLUTION OF THE DIMETHYLOL DERIVATIVE OF THE LEVULINIC HYDANTOIN OF THE FORMULA
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) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |