Patent US2509440A successfully refreshed from Google Patents.
US2509440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caustic alkali detergent
Assignee: —
•
Filing: —
•
Granted: 1950-05-30
•
Expires: 1967-05-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:09
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/06; C11D17/00; C11D17/0004; C11D3/044; C11D7/00; C11D7/02; C11D7/04; C11D7/06; C11D7/10; C11D7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A DETERGENT COMPOSITION COMPRISING A FLAKE ALKALI METAL HYDROXIDE, PARTICLES OF WATER-SOLUBLE COMPOUND TAKEN FROM THE CLASS CONSISTING OF PHOSPHORIC ACID, ALKALI METAL ORTHO-PHOSPHATES AND ALKALI METAL POLYPHOSPHATES IN AN AMOUNT LESS THAN THE HYDROXIDE, AND A SUFFICIENT AMOUNT OF A LIQUID, WATER-DISPERSIBLE AMINE WHICH IS NONVOLATILE AT 150-180*F. TO CAUSE ADHERENCE OF THE COMPOUND TO THE HYDROXIDE.
Claim 2
Dependent Claim
58 words
A DETERGENT COMPOSITION COMPRISING A FLAKE ALKALI METAL HYDROXIDE, PARTICLES OF WATER-SOLUBLE COMPOUND TAKEN FROM THE CLASS CONSISTING OF PHOSPHORIC ACID, ALKALI METAL ORTHO-PHOSPHATES AND ALKALI METAL POLYPHOSPHATES IN AN AMOUNT LESS THAN THE HYDROXIDE, AND A SUFFICIENT AMOUNT OF A LIQUID, WATER-DISPERSIBLE AMINE WHICH IS NONVOLATILE AT 150-180*F. TO CAUSE ADHERENCE OF THE COMPOUND TO THE HYDROXIDE.
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) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |