Patent US1458877A successfully refreshed from Google Patents.
US2809906A
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Phosphating compositions
Assignee: Wyandotte Chemicals Corp
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Filing: 1952-11-25
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Granted: 1957-10-15
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Expires: 1972-11-25
Abstract
No abstract record available.
Inventors
- 👤 Henry J Baecker
- 👤 Edward J Kubis
- 👤 Andrew W Liger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:41
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/40; C23C22/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
IN PHOSPHATING-CLEANER COMPOSITIONS CONSISTING ESSENTIALLY OF PHOSPHATE SALT AND ORGANIC DETERGENT, THE IMPROVEMENT WHEREIN AT LEAST 50% BY WEIGHT OF SAID DETERGENT CONSISTS OF A CONJUGATED POLYOXYPROPYLENEPOLYOXYETHYLENE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
31 words
IN PHOSPHATING-CLEANER COMPOSITIONS CONSISTING ESSENTIALLY OF PHOSPHATE SALT AND ORGANIC DETERGENT, THE IMPROVEMENT WHEREIN AT LEAST 50% BY WEIGHT OF SAID DETERGENT CONSISTS OF A CONJUGATED POLYOXYPROPYLENEPOLYOXYETHYLENE COMPOUND HAVING THE FORMULA
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) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |