US2624758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted mono aralkyl alkylene polyamino polyacetic acids
Assignee: Individual
•
Filing: 1950-11-01
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Granted: 1953-01-06
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Expires: 1970-11-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Bersworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:59
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/44; C; C11; C11D; C11D1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE COMPOUND CONFORMING TO THE FORMULA: WHEREIN X IS ONE OF THE GROUP CONSISTING OF HYDROGEN, ALKYL, ALKOXYL, HYDROXYL AND HALOGEN WITH AT LEAST ONE X GROUP BUT NOT MORE THAN THREE X GROUPS BEING HALOGEN; R CONSISTS OF A DI-VALENT ALKYLENE GROUP OF FROM 1 TO 5 CARBON ATOMS; ALKYLENE IS ONE OF THE GROUP CONSISTING OF CH2.CH2; CH2.CH2.CH2; AND CH(CH3)CH2; N IS A NUMERAL SELECTED FROM THE GROUP CONSISTING OF 1 TO 5; AND A IS ONE OF THE GROUP CONSISTING OF CH2.COOH; CH2.CH2.COOH AND THE ALKALI METAL, AMMONIUM AND AMINE SALTS THEREOF.
Claim 2
Dependent Claim
95 words
THE COMPOUND CONFORMING TO THE FORMULA: WHEREIN X IS ONE OF THE GROUP CONSISTING OF HYDROGEN, ALKYL, ALKOXYL, HYDROXYL AND HALOGEN WITH AT LEAST ONE X GROUP BUT NOT MORE THAN THREE X GROUPS BEING HALOGEN; R CONSISTS OF A DI-VALENT ALKYLENE GROUP OF FROM 1 TO 5 CARBON ATOMS; ALKYLENE IS ONE OF THE GROUP CONSISTING OF CH2.CH2; CH2.CH2.CH2; AND CH(CH3)CH2; N IS A NUMERAL SELECTED FROM THE GROUP CONSISTING OF 1 TO 5; AND A IS ONE OF THE GROUP CONSISTING OF CH2.COOH; CH2.CH2.COOH AND THE ALKALI METAL, AMMONIUM AND AMINE SALTS THEREOF.
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) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |