US3046078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft polymerization process
Assignee: Wyeth Holdings LLC
•
Filing: 1958-03-18
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Granted: 1962-07-24
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Expires: 1978-03-18
Abstract
No abstract record available.
Inventors
- 👤 Jason M Salsbury
- 👤 Kaizerman Samuel
- 👤 Mino Guido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:21
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/113; H04N1/1135; D; D06; D06C; D06C29/00; D06M; D06M14/00; D06M14/02; D06M14/04; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS COMPRISING CONTINUOUSLY CONTACTING AND WETTING A CELLULOSIC MATERIAL WITH AN ACIDIC DISPERSION OF A CERIC SALT, PASSING SAID WETTED MATERIAL THROUGH AN ATMOSPHERE OF A POLYMERIZABLE MONOMER HAVING A POLYMERIZABLE CH2=C< GROUP, WHEREIN SAID MONOMER HAS A BOILING POINT BETWEEN ABOUT 20*C. AND 150*C. AND IS SOLUBLE IN WATER TO AT LEAST 0.5%, IN THE VAPOR STATE, AT A TEMPERATURE ELEVATED SUFFICIENTLY TO MAINTAIN SAID MONOMER IN THE VAPOR PHASE AND FOR A PERIOD OF TIME SUFFICIENT TO GRAFT-POLYMERIZE SAID MONOMER ON SAID MATERIAL WHEREIN SAID PROCESS IS CARRIED OUT AT SUBSTANTIALLY ATMOSPHERIC PRESSURE.
Claim 2
Dependent Claim
96 words
A PROCESS COMPRISING CONTINUOUSLY CONTACTING AND WETTING A CELLULOSIC MATERIAL WITH AN ACIDIC DISPERSION OF A CERIC SALT, PASSING SAID WETTED MATERIAL THROUGH AN ATMOSPHERE OF A POLYMERIZABLE MONOMER HAVING A POLYMERIZABLE CH2=C< GROUP, WHEREIN SAID MONOMER HAS A BOILING POINT BETWEEN ABOUT 20*C. AND 150*C. AND IS SOLUBLE IN WATER TO AT LEAST 0.5%, IN THE VAPOR STATE, AT A TEMPERATURE ELEVATED SUFFICIENTLY TO MAINTAIN SAID MONOMER IN THE VAPOR PHASE AND FOR A PERIOD OF TIME SUFFICIENT TO GRAFT-POLYMERIZE SAID MONOMER ON SAID MATERIAL WHEREIN SAID PROCESS IS CARRIED OUT AT SUBSTANTIALLY ATMOSPHERIC PRESSURE.
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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |