Patent US3765834A successfully refreshed from Google Patents.
US3765834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simultaneous desize-scour-bleach with activated hydrogen peroxide
Assignee: FMC Corp
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Filing: 1971-08-02
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Granted: 1973-10-16
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Expires: 1991-08-02
Abstract
Abstract This invention provides a combination desizing, scouring and bleaching process for greige textiles employing an alkaline hydrogen peroxide and peroxydiphosphate.
Inventors
- 👤 L Sitver
- 👤 R Yelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:08
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/12; D06L1/14; D06L4/00; D06L4/10; D06L4/13; D06L4/17
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
21 words
The process of claim 1 in which the solution contains at least 0.1% of a paraffinicnaphthenic nonolefinic petroleum distillate fraction solvent.
Claim 2
Dependent Claim
27 words
The process of claim 1 in which the solution contains a stabilizing amount of a water-soluble silicate and about 0.1% of a nonionic or anionic wetting agent.
Claim 3
Dependent Claim
32 words
The process of claim 1 in which the solution contains between 0.8% and 1.0% of the petroleum solvent, between 0.2% and 0.8% of the peroxydiphosphate and between 2.5% and 3.5% hydrogen peroxide.
References Cited (Backward Citations)
US3634024A
Cited
US3649164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |