US2940863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of textiles
Assignee: British Industrial Plastics Ltd
•
Filing: 1958-12-15
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Granted: 1960-06-14
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Expires: 1978-12-15
Abstract
No abstract record available.
Inventors
- 👤 Bennett Alan
- 👤 Heywood Derek Wallwork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:20
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/15; D06M15/03; D06M15/11; D06M15/19; D06M15/37; D06M15/39; D06M15/423; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2361
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
PROCESS OF DEPOSITION OF HYDROPHILIC COLLOIDS IN FIBROUS MATERIALS, IN WHICH PROCESS A FIBROUS MATERIAL IS IMPREGNATED WITH AN AQUEOUS PREPARATION CONTAINING THE COLLOID, A UREA-FORMALDEHYDE CONDENSATION PRODUCT, AND A CATALYST FOR THE LATTER, A UREA-FORMALDEHYDE CONDENSATION PRODUCT OF LOW WATER TOLERANCE BEING USED IN THE MAKING UP OF THE AQUEOUS PREPARATION, AN AQUEOUS SOLUTION OF SAID CONDENSATION PRODUCT BEING DILUTED WITH WATER IN THE PRESENCE OF THE COLLOID SO THAT IT IS THROWN OUT OF SOLUTION INTO INTIMATE ASSOCIATION WITH THE COLLOID, THE AQUEOUS PREPARATION CONTAINING UP TO 30% OF THE CONDENSATION PRODUCT.
Claim 2
Dependent Claim
94 words
PROCESS OF DEPOSITION OF HYDROPHILIC COLLOIDS IN FIBROUS MATERIALS, IN WHICH PROCESS A FIBROUS MATERIAL IS IMPREGNATED WITH AN AQUEOUS PREPARATION CONTAINING THE COLLOID, A UREA-FORMALDEHYDE CONDENSATION PRODUCT, AND A CATALYST FOR THE LATTER, A UREA-FORMALDEHYDE CONDENSATION PRODUCT OF LOW WATER TOLERANCE BEING USED IN THE MAKING UP OF THE AQUEOUS PREPARATION, AN AQUEOUS SOLUTION OF SAID CONDENSATION PRODUCT BEING DILUTED WITH WATER IN THE PRESENCE OF THE COLLOID SO THAT IT IS THROWN OUT OF SOLUTION INTO INTIMATE ASSOCIATION WITH THE COLLOID, THE AQUEOUS PREPARATION CONTAINING UP TO 30% OF THE CONDENSATION PRODUCT.
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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |