US2872706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for polymerizing vinyl monomers
Assignee: Wyeth Holdings LLC
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Filing: 1954-09-10
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Granted: 1959-02-10
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Expires: 1974-09-10
Abstract
No abstract record available.
Inventors
- 👤 Jordan Donald Gifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:49
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/24; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00099
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A REACTOR FOR BULK POLYMERIZING LIQUID MONOMERS CONTAINING A TERMINAL ETHYLENIC GROUP TO A SOLID POLYMER WHICH COMPRISES A SEALABLE REGID CASING, THE UPPER AND LOWER SIDES OF SAID CASING CONTAINING ALIGNED OPENINGS AND ELONGATED RIGID TAPERED MOLD POSITIONED IN SAID CASING AND AXIALLY ALIGNED WITH THE OPENINGS IN SAID CASING''S SIDES, SAID MOLD BEING UNIFORMLY TAPERED, AT LEAST 0.25 INCH PER FOOT OF LENGTH AND HAVING AT LEAST ONE TRAVERSE DIMENSION NOT EXCEEDING ABOUT 4 INCHES AT ANY POINT ALONG THE LENGTH OF SAID MOLD, RECESSES AROUND THE OPENINGS IN SAID UPPER AND LOWER SIDES, SEALING GASKET MEMBER.
Claim 2
Dependent Claim
99 words
A REACTOR FOR BULK POLYMERIZING LIQUID MONOMERS CONTAINING A TERMINAL ETHYLENIC GROUP TO A SOLID POLYMER WHICH COMPRISES A SEALABLE REGID CASING, THE UPPER AND LOWER SIDES OF SAID CASING CONTAINING ALIGNED OPENINGS AND ELONGATED RIGID TAPERED MOLD POSITIONED IN SAID CASING AND AXIALLY ALIGNED WITH THE OPENINGS IN SAID CASING''S SIDES, SAID MOLD BEING UNIFORMLY TAPERED, AT LEAST 0.25 INCH PER FOOT OF LENGTH AND HAVING AT LEAST ONE TRAVERSE DIMENSION NOT EXCEEDING ABOUT 4 INCHES AT ANY POINT ALONG THE LENGTH OF SAID MOLD, RECESSES AROUND THE OPENINGS IN SAID UPPER AND LOWER SIDES, SEALING GASKET MEMBER.
References Cited (Backward Citations)
US1390257A
Cited
US1457290A
Cited
US2136424A
Cited
US2136425A
Cited
US2369520A
Cited
US2485798A
Cited
US2698968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |