US2929798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrinkle resistant fabrics and products for producing same
Assignee: Dan River Mills Inc
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Filing: 1955-12-09
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Granted: 1960-03-22
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Expires: 1975-12-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Rosser Lee Wayland
- 👤 Underwood Marks Purrington
- 👤 George S Y Poon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:34
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
THE PROCESS WHICH COMPRISES REACTING ONE MOL OF MELAMINE WITH FROM ABOUT 3 TO 6 MOLS OF DIMETHYLOL ETHYLENE UREA, UNDER ALKALINE CONDITIONS AT A TEMPERATURE OF FROM ABOUT 180*F. TO 220*F.
Claim 2
Dependent Claim
32 words
THE PROCESS WHICH COMPRISES REACTING ONE MOL OF MELAMINE WITH FROM ABOUT 3 TO 6 MOLS OF DIMETHYLOL ETHYLENE UREA, UNDER ALKALINE CONDITIONS AT A TEMPERATURE OF FROM ABOUT 180*F. TO 220*F.
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) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |