Patent US2829118A successfully refreshed from Google Patents.
US2829118A
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Process for forming shaped bodies from polyethylene
Assignee: Evonik Operations GmbH
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Filing: 1953-09-23
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Granted: 1958-04-01
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Expires: 1973-09-23
Abstract
No abstract record available.
Inventors
- 👤 Wehr Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:55
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/006; B29C48/00; B29C48/022; B32; B32B; B32B27/00; B29C48/001; B29C48/0011; B29C48/0022; B29C48/03; B29C48/04; B29C48/07; B29C48/08; B29C48/12; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2105/00; B29K2105/25; B29K2105/251; Y; Y10; Y10S; Y10S8/00; Y10S8/09; Y10S8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR PRODUCING SHAPED BODIES OF POLYETHYLENE WHICH COMPRISES SWELLING POLYETHENE IN A SOLVENT WHICH ONLY DISSOLVES POLYETHYLENE AT AN ELEVATED TEMPERATURE, SAID SWELLING BEING CARRIED OUT AT A TEMPERATURE BELOW THAT AT WHICH THE SOLVENT DISSOLVES THE POLYETHYENE, SEPARATING THE SWOLLEN POLYETHYLENE FROM ANY EXCESS SOLVENT AND THEN FUSING AND SHAPING THE FUSED SWOLLEN POLYETHYLENE AT AN ELEVATED TEMPERTURE.
Claim 2
Dependent Claim
61 words
A PROCESS FOR PRODUCING SHAPED BODIES OF POLYETHYLENE WHICH COMPRISES SWELLING POLYETHENE IN A SOLVENT WHICH ONLY DISSOLVES POLYETHYLENE AT AN ELEVATED TEMPERATURE, SAID SWELLING BEING CARRIED OUT AT A TEMPERATURE BELOW THAT AT WHICH THE SOLVENT DISSOLVES THE POLYETHYENE, SEPARATING THE SWOLLEN POLYETHYLENE FROM ANY EXCESS SOLVENT AND THEN FUSING AND SHAPING THE FUSED SWOLLEN POLYETHYLENE AT AN ELEVATED TEMPERTURE.
References Cited (Backward Citations)
GB613018A
Cited
US2753287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |