Patent US2832758A successfully refreshed from Google Patents.
US2832758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid prepolymers of diallyl phthalate
Assignee: FMC Corp
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Filing: 1954-02-19
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Granted: 1958-04-29
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Expires: 1974-02-19
Abstract
No abstract record available.
Inventors
- 👤 Charles A Heiberger
- 👤 James L Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:24
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F18/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
THE METHOD OF PREPATING A SOLID DIALLYL PHTHALATE PREPOLYMER FROM DIALLYL PHTHALATE MONOMER, COMPRISING: POLYMERIZING AT ELEVATED TEMPERATURE A MIXTURE CONTAINING DIALLYL PHTHALATE MONOMER, WATER, A PEROXIDE CATALYST, AND A POLYMERIZATION MODIFIER OF THE FORMULA:
Claim 2
Independent Claim
35 words
THE METHOD OF PREPATING A SOLID DIALLYL PHTHALATE PREPOLYMER FROM DIALLYL PHTHALATE MONOMER, COMPRISING: POLYMERIZING AT ELEVATED TEMPERATURE A MIXTURE CONTAINING DIALLYL PHTHALATE MONOMER, WATER, A PEROXIDE CATALYST, AND A POLYMERIZATION MODIFIER OF THE FORMULA:
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) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |