US2632921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving the bonding properties of polyethylene plastics
Assignee: Individual
•
Filing: 1949-01-18
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Granted: 1953-03-31
•
Expires: 1969-01-18
Abstract
No abstract record available.
Inventors
- 👤 Werner H Kreidl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:39
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/08; B29C59/085; B29D; B29D7/00; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29L; B29L2031/00; B29L2031/712; B29L2031/7158
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE METHOD OF PRINTING ON A SURFACE OF A DY OF POLYETHYLENE RESINS WHICH COMPRISES SUBJECTING THE RESINS BODY TO A DIFFERENTIAL HEAT TREATMENT WHEREBY THE SAID SURFACE IS SUBJECTED TO AN ELEVATED TEMPERATURE SUFFICIENT TO IMPROVE ITS CORRESPONDING PROPERTIES BUT NOT IN EXCESS TO TEMPERATURES COMPATIBLE WITH THE STABILITY OF THE POLYETHYLENE RESIN, WHILE THE MATERIAL ADJOINING THE XX SURFACE LAYER IS HELD AT TEMPERATURE BELOW
Claim 2
Independent Claim
67 words
THE METHOD OF PRINTING ON A SURFACE OF A DY OF POLYETHYLENE RESINS WHICH COMPRISES SUBJECTING THE RESINS BODY TO A DIFFERENTIAL HEAT TREATMENT WHEREBY THE SAID SURFACE IS SUBJECTED TO AN ELEVATED TEMPERATURE SUFFICIENT TO IMPROVE ITS CORRESPONDING PROPERTIES BUT NOT IN EXCESS TO TEMPERATURES COMPATIBLE WITH THE STABILITY OF THE POLYETHYLENE RESIN, WHILE THE MATERIAL ADJOINING THE XX SURFACE LAYER IS HELD AT TEMPERATURE BELOW
References Cited (Backward Citations)
GB560184A
Cited
US2463370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |