US2797198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid foam-combating composition
Assignee: Hercules Powder Co
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Filing: 1954-04-29
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Granted: 1957-06-25
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Expires: 1974-04-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Fred L Chappell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:56
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/06; D21H21/12; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; D21H17/00; D21H17/03; D21H17/05; D21H17/14; D21H17/71; D21H17/72; D21H17/06; D21H17/07; D21H17/62; D21H17/63; D21H17/66; Y; Y10; Y10S; Y10S92/00; Y10S92/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A SOLID DEFOAMER COMPOSITION FOR COMBATING FOAM IN PAPERMAKING PROCESSES CONSISTING ESSENTIALLY OF FROM ABOUT 55% TO ABOUT 72% OF A HIGHER ALIPHATIC ALCOHOL HAVING A CARBON CHAIN OF ABOUT 14 TO 25 CARBON ATOMS WHICH IS SOLID AT ROOM TEMPERATURE AND HAS A MELTING POINT BELOW 100* C., FROM ABOUT 3% TO ABOUT 25% OF A HIGHER ALIPHATIC ACID HAVING A CARBON CHAIN OF ABOUT 14 TO 25 CARBON ATOMS WHICH IS SOLID AT ROOM TEMPERATURE HAS A MELTING POINT BELOW 100* C., AND AT LEAST ABOUT 5%, BASED ON THE WEIGHT OF THE COMPOSITION, AND NOT MORE THAN 100%, BASED ON THE WEIGHT OF THE ALCOHOL, OF A DISPERSING AGENT, SAID THREE INGREDIENTS BEING UNIFORMLY INTERMIXED.
Claim 2
Dependent Claim
118 words
A SOLID DEFOAMER COMPOSITION FOR COMBATING FOAM IN PAPERMAKING PROCESSES CONSISTING ESSENTIALLY OF FROM ABOUT 55% TO ABOUT 72% OF A HIGHER ALIPHATIC ALCOHOL HAVING A CARBON CHAIN OF ABOUT 14 TO 25 CARBON ATOMS WHICH IS SOLID AT ROOM TEMPERATURE AND HAS A MELTING POINT BELOW 100* C., FROM ABOUT 3% TO ABOUT 25% OF A HIGHER ALIPHATIC ACID HAVING A CARBON CHAIN OF ABOUT 14 TO 25 CARBON ATOMS WHICH IS SOLID AT ROOM TEMPERATURE HAS A MELTING POINT BELOW 100* C., AND AT LEAST ABOUT 5%, BASED ON THE WEIGHT OF THE COMPOSITION, AND NOT MORE THAN 100%, BASED ON THE WEIGHT OF THE ALCOHOL, OF A DISPERSING AGENT, SAID THREE INGREDIENTS BEING UNIFORMLY INTERMIXED.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |