Patent US2933648A successfully refreshed from Google Patents.
Patent US3068192A successfully refreshed from Google Patents.
US3068192A
Expired / Lapsed
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Suspension polymerization in the presence of a phospholipid
Assignee: Cosden Petroleum Corp
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Filing: 1958-12-19
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Granted: 1962-12-11
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Expires: 1978-12-19
Abstract
No abstract record available.
Inventors
- 👤 Roy A White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:36
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE PROCESS OF PREPARING POLYMER BEADS COMPRISING AGITATING A LIQUID POLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER AS A FINELY DISPERSED SUSPENSION IN WATER AT RISES TEMPERATURES IN THE PRESENCE OF A SMALL QUANTITY OF A DISPERSING AGENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHATES OF CALCIUM, BARIUM AND MAGNESIUM AND A SMALL QUANTITY OF A PHOSPHOLIPID.
Claim 2
Dependent Claim
54 words
THE PROCESS OF PREPARING POLYMER BEADS COMPRISING AGITATING A LIQUID POLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER AS A FINELY DISPERSED SUSPENSION IN WATER AT RISES TEMPERATURES IN THE PRESENCE OF A SMALL QUANTITY OF A DISPERSING AGENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHATES OF CALCIUM, BARIUM AND MAGNESIUM AND A SMALL QUANTITY OF A PHOSPHOLIPID.
References Cited (Backward Citations)
US2668806A
Cited
US2673194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |