US3000830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of polyvinylpyrrolidone as a soil-suspending agent
Assignee: Individual
•
Filing: 1952-12-05
•
Granted: 1961-09-19
•
Expires: 1972-12-05
Abstract
No abstract record available.
Inventors
- 👤 Fong Willie
- 👤 Wilfred H Ward
- 👤 Harold P Lundgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:39
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3769; C11D3/3776; C11D3/0005; C11D3/0036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A PROCESS FOR REMOVING SOIL FROM A TEXTILE MATERIAL AND MINIMIZING THE RE-DEPOSITION OF REMOVED SOIL WHICH COMPRISES WASHING THE MATERIAL WITH A SOLUTION COMPRISING WATER, AN ORGANIC SURFACE-ACTIVE DETERGENT, AND POLYVINYLPYRROLIDONE.
Claim 2
Dependent Claim
32 words
A PROCESS FOR REMOVING SOIL FROM A TEXTILE MATERIAL AND MINIMIZING THE RE-DEPOSITION OF REMOVED SOIL WHICH COMPRISES WASHING THE MATERIAL WITH A SOLUTION COMPRISING WATER, AN ORGANIC SURFACE-ACTIVE DETERGENT, AND POLYVINYLPYRROLIDONE.
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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |