US2717874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedure and apparatus for the sterilization of water
Assignee: Individual
•
Filing: 1951-05-12
•
Granted: 1955-09-13
•
Expires: 1971-05-12
Abstract
No abstract record available.
Inventors
- 👤 Verain Marcel Jules
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:29
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; B; B01; B01J; B01J19/00; B01J19/08; B01J19/10; C02F1/34; C02F1/36; C02F2303/00; C02F2303/18; C02F2303/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
CHLORINATED WATER WAS ACIDIFIED AND THE EVOLVING GAS THROUGHLY ELIMATED AND PASSED INTO A WASHER CONTAINING A SOLUTION OF ARTHO-TOLIDINE. PROGRESS OF THE DISCOLORATION PERMITTED A PERSON TO BE INFORMED ABOUT THE ELIMINATION OF CHLORINE IN WATER.
Claim 2
Dependent Claim
37 words
CHLORINATED WATER WAS ACIDIFIED AND THE EVOLVING GAS THROUGHLY ELIMATED AND PASSED INTO A WASHER CONTAINING A SOLUTION OF ARTHO-TOLIDINE. PROGRESS OF THE DISCOLORATION PERMITTED A PERSON TO BE INFORMED ABOUT THE ELIMINATION OF CHLORINE IN WATER.
References Cited (Backward Citations)
US2163649A
Cited
GB500271A
Cited
US2272223A
Cited
US2417722A
Cited
US2452928A
Cited
US2500008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |