US3027304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for fluoridating water
Assignee: Aerial Products Inc
•
Filing: 1958-01-08
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Granted: 1962-03-27
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Expires: 1978-01-08
Abstract
No abstract record available.
Inventors
- 👤 Anthony E Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:22
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS FOR ADDING FLUORIDE, WITHIN THE RANGE OF ABOUT 0.5 TO 1.5 P.P.M., TO FLUORIDE FREE WATER, WHICH COMPRISES; PASSING SAID FLUORIDE FREE WATER INTO EQUILIBRIUM WITH A FINELY DIVIDED FUSED SOLID MIXTURE OF 9% TO 17% BY WEIGHT OF CALCIUM FLUORIDE IN TRICALCIUM PHOSPHATE.
Claim 2
Dependent Claim
46 words
A PROCESS FOR ADDING FLUORIDE, WITHIN THE RANGE OF ABOUT 0.5 TO 1.5 P.P.M., TO FLUORIDE FREE WATER, WHICH COMPRISES; PASSING SAID FLUORIDE FREE WATER INTO EQUILIBRIUM WITH A FINELY DIVIDED FUSED SOLID MIXTURE OF 9% TO 17% BY WEIGHT OF CALCIUM FLUORIDE IN TRICALCIUM PHOSPHATE.
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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |