US2929758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for the control of iron bacteria and compositions for use therein
Assignee: Buckman Laboratories Inc
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Filing: 1957-09-23
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Granted: 1960-03-22
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Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 Stanley J Buckman
- 👤 John D Pera
- 👤 John W Appling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:17
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/008; A; A01; A01N; A01N47/00; A01N47/08; A01N47/10; A01N47/12; A01N47/14; C; C02; C02F; C02F1/00; C02F1/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
61 words
AN AQUEOUS SUSPENSION OF CELLULOSIC PULP INTENDED FOR USE IN THE PRODUCTION OF PAPER OR PAPERBOARD WHICH IS NORMALLY SUSCEPTIBLE TO MICROBIOLOGICAL DETERIORATION BY IRON BACTERIA WHICH CONTAINS, FOR THE PURPOSE OF INHIBITING SUCH DETERIORATION, BETWEEN APPROXIMATELY 0.1 AND APPROXIMATELY 20 PARTS PER MILLION OF A WATERSOLUBLE N-MONOALKYL-SUBSTITUTED DITHIOCARBAMIC ACID, THE ALKYL RADICAL OF WHICH HAS FEWER THAN FOUR CARBON ATOMS.
References Cited (Backward Citations)
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Cited
US2588428A
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US2686119A
Cited
US2791605A
Cited
US2792327A
Cited
US2797181A
Cited
US2816136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |