US2915428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for controlling slime in paper making systems and products therefrom
Assignee: Primerica Inc
•
Filing: 1956-02-10
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Granted: 1959-12-01
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Expires: 1976-02-10
Abstract
No abstract record available.
Inventors
- 👤 Elliott L Weinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:28
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/36; A; A01; A01N; A01N55/00; A01N55/02; A01N55/04; D21C; D21C9/00; D21C9/008; D21C9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR CONTROLLING THE SLIME CONTENT OF A PAPER MANUFACTURING SYSTEM WHICH COMPRISES INCORPORATING IN THE SYSTEM A BIOCIDALLY EFFECTIVE AMOUNT OF BIS TRIBUTYLTIN OXIDE WHEREBY THE SLIME CONTENT OF THE SYSTEM IS REDUCED.
Claim 2
Dependent Claim
35 words
A PROCESS FOR CONTROLLING THE SLIME CONTENT OF A PAPER MANUFACTURING SYSTEM WHICH COMPRISES INCORPORATING IN THE SYSTEM A BIOCIDALLY EFFECTIVE AMOUNT OF BIS TRIBUTYLTIN OXIDE WHEREBY THE SLIME CONTENT OF THE SYSTEM IS REDUCED.
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) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |