Patent US3230137A successfully refreshed from Google Patents.
US3230137A
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US
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Control of slime in paper-making using ultra-violet irradiated silver fluoride
Assignee: Silaco Chemical Co
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Filing: 1961-03-22
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Granted: 1966-01-18
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Expires: 1981-03-22
Abstract
No abstract record available.
Inventors
- 👤 Hal J Ellison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:51
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/16; A61L2/23; A61L2/238; B; B65; B65D; B65D81/00; B65D81/24; B65D81/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
PAPER PULP STOCK CONTAINING AS A SLIME CONTROL AGENT 0.5 TO 100 P.P.M., BASED ON THE WEIGHT OF SAID STOCK, OF ULTRA-VIOLET-IRRADIATED SILVER FLUORIDE IN ADMIXTURE WITH A SMALL AMOUNT OF COLLOIDAL SILVER PRODUCED BY SAID ULTRAVIOLET IRRADIATION, SAID ULTRA-VIOLET IRRADIATED SILVER FLUORIDE BEING PRODUCED BY THE IRRADIATION OF AN AQUEOUS SOLUTION OF SILVER FLUORIDE WITH IRRADIATION RAYS WHICH ARE AT LEAST ABOUT 95% IN THE ULTRA-VIOLET SPECTRUM FOR AT LEAST ABOUT SIX MINUTES PER GALLON OFTHE ULTRA-VIOLET IRRADIATED, AQUEOUS SILVER FLUORIDE SOLUTION TO OBTAIN SAID ADMIXTURE.
Claim 2
Dependent Claim
87 words
PAPER PULP STOCK CONTAINING AS A SLIME CONTROL AGENT 0.5 TO 100 P.P.M., BASED ON THE WEIGHT OF SAID STOCK, OF ULTRA-VIOLET-IRRADIATED SILVER FLUORIDE IN ADMIXTURE WITH A SMALL AMOUNT OF COLLOIDAL SILVER PRODUCED BY SAID ULTRAVIOLET IRRADIATION, SAID ULTRA-VIOLET IRRADIATED SILVER FLUORIDE BEING PRODUCED BY THE IRRADIATION OF AN AQUEOUS SOLUTION OF SILVER FLUORIDE WITH IRRADIATION RAYS WHICH ARE AT LEAST ABOUT 95% IN THE ULTRA-VIOLET SPECTRUM FOR AT LEAST ABOUT SIX MINUTES PER GALLON OFTHE ULTRA-VIOLET IRRADIATED, AQUEOUS SILVER FLUORIDE SOLUTION TO OBTAIN SAID ADMIXTURE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |