Patent US3756950A successfully refreshed from Google Patents.
US3756950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric softening compositions
Assignee: Lever Brothers Co
•
Filing: 1971-03-08
•
Granted: 1973-09-04
•
Expires: 1991-03-08
Abstract
Abstract A FABRIC SOFTENING COMPOSITION IS DISCLOSED WHICH INCORPORATES A CATIONIC FABRIC SOFTENING AGENT AND A WATERSOLUBLE ACID SALT OF AN AMPHOTERIC AMINO CARBOXYLIC ACID CHELATING AGENT TO DECREASE FABRIC YELLOWING CAUSED BY THE PRESENCE IN THE WATER USED OF DISSOLVED OR SUSPENDED METAL COMPOUNDS.
Inventors
- 👤 B Gluck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:18
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/325; D06M13/342; C; C11; C11D; C11D1/00; C11D1/38; C11D1/62; C11D3/00; C11D3/0005; C11D3/001; C11D3/0015; C11D3/16; C11D3/26; C11D3/33; D06M13/402; D06M13/432; D06M13/46; D06M13/47
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |