US3830745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent composition
Assignee: Hitachi Ltd
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Filing: 1972-08-03
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Granted: 1974-08-20
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Expires: 1992-08-03
Abstract
Abstract IMPROVED DETERGENT COMPOSITIONS COMPRISING AN ANIONIC OR NONIONIC SURFACE ACTIVE AGENT AND, AS A BUILDER, A NOVEL WATER-SOLUBLE SALT OF COPOLYMER OF CYCLOPENTENE OR ITS DERIVATIVE WITH MALEIC ANHYDRIDE. SUCH DETERGENT COMPOSITIONS HAVE EXCELLENT DETERGENCY AND, IN ADDITION, HAVE A PRACTICALLY SATISFACTORY NON-IRRIATING PROPERTY ON SKIN AND EXCELLENT ANTISTATIC EFFECT ON THE WASHED MATERIALS AS WELL AS A SUPERIOR INHIBITING EFFECT ON RESTAINING. THE NOVEL WATER-SOLUBLE SALTS CAN BE READILY PRODUCED AT LOW COST AND THE PRESENT DETERGENT COMPOSITIONS CAN BE EASILY MANUFACTURED THEREFROM, SIMPLY BY MIXING WITH OTHER COMPONENTS.
Inventors
- 👤 H Tsukuni
- 👤 S Fujiki
- 👤 T Tsunoda
- 👤 Y Ooba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:54
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3761
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |