US3188258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding of olefin polymers
Assignee: Phillips Petroleum Co
•
Filing: 1957-12-30
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Granted: 1965-06-08
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Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Young John Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:59
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J5/122; B; B29; B29C; B29C65/00; B29C65/48; B29C65/4895; B29C66/00; B29C66/01; B29C66/02; B29C66/026; B29C66/70; B29C66/73; B29C66/737; B29C66/7377; B29C66/73773; B29C66/73774; B29C66/739; B29C66/7392; B29C66/73921; C08J7/00; C08J7/12; C08J7/126; B29C65/02; B29C65/52; B29C65/523; B29C66/40; B29C66/41; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/53; B29C66/532; B29C66/5324; B29C66/53241; B29C66/71; B29L; B29L2023/00; B29L2023/22; C08J2323/00; C08J2323/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
149 words
IN A METHOD FOR JOINING SECTIONS OFPIPE UTILIZING A SLEEVE TO BE POSITIONED OVER THE ENDS OF AND IN CONTACT WITH THE OUTER SURFACES OF SAID PIPE SECTIONS, SAID PIPE SECTIONS AND SAID SLEEVE BEING FORMED OF A POLYMER OF ETHYLENE HAVING A CRYSTALLINITY OF AT LEAST 80 PERCENT AT 25*C., THE STEPS OF IMMERSING THE ENDS OF A PAIR OF PIPE SECTIONS TO BE JOINED AND A SLEEVE IN A LIQUID HALOGENATED HYDROCARBON; INTRODUCING CHLORINE INTO SAID HALOGENATED HYDROCARBON MAINTAINED AT A TEMPERATURE IN THE RANGE OF 50 TO 180*F.; REMOVING SAID PIPE SECTIONS AND SAID SLEEVE FROM SAID HALOGENATED HYDROCARBON WHEN SAID PIPE SECTION ENDS AND SAID SLEEVE CONTAIN FROM 0.5 TO 5 WEIGHT PERCENT CHLORINE; AND WITH SAID SURFACES WET WITH A LIQUID SOLVENT SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON SOLVENTS AND HALOGENATED HYDROCARBON SOLVENTS POSITIONING SAID SLEEVE OVER SAID ENDS OF SAID PIPE SECTIONS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |