US3184407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler composition and method
Assignee: Veolia WTS USA Inc
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Filing: 1962-02-16
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Granted: 1965-05-18
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Expires: 1982-02-16
Abstract
No abstract record available.
Inventors
- 👤 Kahler Harry Lewis
- 👤 Brown James Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:05
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD OF REDUCING CHEMICAL FEED LINE DEPOSITS AND INCREASING BOILER WATER DISPERSIVE POWER OF TANNERY WASTE PRODUCT FED TO BOILERS, WHICH COMPRISES COOKING A SOLUTION OF TANNERY WASTE LIQUOR WITH A WATER SOLUBLE ALKALI, A WATER SOLUBLE PHOSPHATE AND A WATER SOLUBLE SILICATE ALL PRESENT IN SAID SOLUTION IN QUANTITIES SUFFICIENT TO THROW DOWN MAGNESIA AS A PRECIPITATE AND FORM A TANNERY WASTE PRODUCT HAVING A CONTENT OF MGO ON THE WEIGHT OF THE SOLIDS IN THE TANNERY WASTE PRODUCT BELOW 0.2% BY WEIGHT, REMOVING THE PRECIPITATE AND FEEDING THE TANNERY WASTE PRODUCT FREE FROM THE PRECIPITATE ALONG WITH OTHER BOILER CHEMICALS INCLUDING PHOSPHATE IN A CHEMICAL FEED LINE DIRECT INTO THE STEAM DRUM OF A BOILER.
Claim 2
Independent Claim
118 words
A METHOD OF REDUCING CHEMICAL FEED LINE DEPOSITS AND INCREASING BOILER WATER DISPERSIVE POWER OF TANNERY WASTE PRODUCT FED TO BOILERS, WHICH COMPRISES COOKING A SOLUTION OF TANNERY WASTE LIQUOR WITH A WATER SOLUBLE ALKALI, A WATER SOLUBLE PHOSPHATE AND A WATER SOLUBLE SILICATE ALL PRESENT IN SAID SOLUTION IN QUANTITIES SUFFICIENT TO THROW DOWN MAGNESIA AS A PRECIPITATE AND FORM A TANNERY WASTE PRODUCT HAVING A CONTENT OF MGO ON THE WEIGHT OF THE SOLIDS IN THE TANNERY WASTE PRODUCT BELOW 0.2% BY WEIGHT, REMOVING THE PRECIPITATE AND FEEDING THE TANNERY WASTE PRODUCT FREE FROM THE PRECIPITATE ALONG WITH OTHER BOILER CHEMICALS INCLUDING PHOSPHATE IN A CHEMICAL FEED LINE DIRECT INTO THE STEAM DRUM OF A BOILER.
References Cited (Backward Citations)
US1613656A
Cited
FR972433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |