US2530261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproofing and creaseproofing of cellulose and protein textiles
Assignee: Akzo Nobel UK PLC
•
Filing: 1948-11-27
•
Granted: 1950-11-14
•
Expires: 1968-11-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Morton
- 👤 Ward Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:24
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/68; D06M11/70; D06M11/71; D06M11/51; D06M11/55; D06M11/56; D06M11/58; D06M11/66; D06M11/72; D06M13/00; D06M13/322; D06M13/402; D06M13/432; D06M13/438; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/667; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2393; Y10T442/2631; Y10T442/2672; Y10T442/268; Y10T442/2721
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
CELLULOSE AND PROTEIN TEXTILE MATERIALS HAVING WITHIN THE INDIVIDUAL FIBERS AT LEAST 3 PER CENT BY WEIGHT OF CHEMICALLY COMBINED NON-VOLATILE STRONG MINERAL ACID AND CYANAMIDE PRODUCED BY IMPREGNATING SAID MATERIALS WITH AN AQUEOUS SOLUTION CONSISTING OF 5 TO 40 PER CENT OF A NON-VOLATILE STRONG MINERAL ACID AND 8 TO 25 PER CENT OF CYANAMIDE, DRYING AT A TEMPERATURE OF BELOW 80* CENTIGRADE AND BAKING AT A TEMPERATURE OF FROM 80* TO 160* CENTIGRADE.
Claim 2
Dependent Claim
75 words
CELLULOSE AND PROTEIN TEXTILE MATERIALS HAVING WITHIN THE INDIVIDUAL FIBERS AT LEAST 3 PER CENT BY WEIGHT OF CHEMICALLY COMBINED NON-VOLATILE STRONG MINERAL ACID AND CYANAMIDE PRODUCED BY IMPREGNATING SAID MATERIALS WITH AN AQUEOUS SOLUTION CONSISTING OF 5 TO 40 PER CENT OF A NON-VOLATILE STRONG MINERAL ACID AND 8 TO 25 PER CENT OF CYANAMIDE, DRYING AT A TEMPERATURE OF BELOW 80* CENTIGRADE AND BAKING AT A TEMPERATURE OF FROM 80* TO 160* CENTIGRADE.
References Cited (Backward Citations)
US2234905A
Cited
US2089697A
Cited
CH196034A
Cited
US2247353A
Cited
US2253457A
Cited
US2488034A
Cited
US2482756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |