Patent US3130118A successfully refreshed from Google Patents.
US3130118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous ketene dimer emulsion and use of same for sizing paper
Assignee: Hercules Powder Co
•
Filing: 1958-12-24
•
Granted: 1964-04-21
•
Expires: 1978-12-24
Abstract
No abstract record available.
Inventors
- 👤 Charles H Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:09
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/08; C08B31/12; C08B31/125; C07; C07C; C07C45/00; C07C45/87; C07C49/00; C07C49/88; D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
AS A COMPOSITION OF MATTER AN AQUESOUS EMULSION HAVING, AS THE CONTINUOUS PHASE, AN AQUEOUS SOLUTION OF AN EMULSIFIER CONSISTING ESSENTIALLY OF FROM ABOUT 0.1% TO ABOUT 6% BY WEIGHT, BASED ON THE WEIGHT OF THE EMULSION, OF A CATIONIC STARCH HAVING THE FORMULA:
Claim 2
Dependent Claim
44 words
AS A COMPOSITION OF MATTER AN AQUESOUS EMULSION HAVING, AS THE CONTINUOUS PHASE, AN AQUEOUS SOLUTION OF AN EMULSIFIER CONSISTING ESSENTIALLY OF FROM ABOUT 0.1% TO ABOUT 6% BY WEIGHT, BASED ON THE WEIGHT OF THE EMULSION, OF A CATIONIC STARCH HAVING THE FORMULA:
References Cited (Backward Citations)
US2627477A
Cited
US2762270A
Cited
US2813093A
Cited
US2785067A
Cited
US2917506A
Cited
US2876217A
Cited
US3006806A
Cited
US2935436A
Cited
US3070452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |