US3789040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Product for the treatment of cellulosic fabrics to improve crease resistance
Assignee: Lever Brothers Co
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Filing: 1971-07-12
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Granted: 1974-01-29
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Expires: 1991-07-12
Abstract
Abstract A SUBSTANTIALLY ANHYDROUS COMPOSITION FOR TREATING CELLULOSIC FABRIC TO IMPROVE ITS CREASE-RESISTANCE COMPRISES A WATER-SOLUBLE RESIN PRECONDENSATE, A LATENT-ACID CATALYST AND A BASIC OR AMPHOTERIC METAL COMPOUND. THE COMPOSITION PREFERABLY TAKES TABLET FORM AND HAS A CORE COMPRISING THE LATENT-ACID CATALYST AND A SHEATH COMPRISING THE RESIN PRECONDENSATE.
Inventors
- 👤 E Mckeown
- 👤 J Metcalfe
- 👤 A Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:03
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/24; C08K3/26; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |