US2555058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastics obtained from amylaceous materials and methods of preparing such plastics
Assignee: "L'IMPREGNATION " CLICHY
•
Filing: 1946-09-05
•
Granted: 1951-05-29
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Expires: 1966-09-05
Abstract
No abstract record available.
Inventors
- 👤 Rouzet Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:50
CPC Classifications
C; C08; C08B; C08B31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD OF PRODUCING A SYNTHETIC RESIN, COMPRISING: OBTAINING AN INTERMEDIATE PRODUCT BY DISSOLVING 1 KILOGRAM OF SOLUBLE STARCH IN 2 LITERS OF 40 PER CENT. FORMOL, NEUTRALIZING THE SOLUTION, HEATING THE NEUTRALIZED SOLUTION TO 100 DEGREES CENTIGRADE AND MAINTAINING IT AT THIS TEMPERATURE FOR 2 HOURS, ADDING THERETO 200 GRAMS OF UREA, 75 GRAMS OF PHENOL AND 20 GRAMS OF SODIUM CARBONATE, MIAINTAINING THE TEMPERATURE FOR ANOTHER 15 MINUTES, COOLING THE SOLUTION, AND DRYING THE SOLUTION.
Claim 2
Independent Claim
77 words
A METHOD OF PRODUCING A SYNTHETIC RESIN, COMPRISING: OBTAINING AN INTERMEDIATE PRODUCT BY DISSOLVING 1 KILOGRAM OF SOLUBLE STARCH IN 2 LITERS OF 40 PER CENT. FORMOL, NEUTRALIZING THE SOLUTION, HEATING THE NEUTRALIZED SOLUTION TO 100 DEGREES CENTIGRADE AND MAINTAINING IT AT THIS TEMPERATURE FOR 2 HOURS, ADDING THERETO 200 GRAMS OF UREA, 75 GRAMS OF PHENOL AND 20 GRAMS OF SODIUM CARBONATE, MIAINTAINING THE TEMPERATURE FOR ANOTHER 15 MINUTES, COOLING THE SOLUTION, AND DRYING THE SOLUTION.
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) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |