US3035958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining polyethylene pipe
Assignee: Phillips Petroleum Co
•
Filing: 1959-11-05
•
Granted: 1962-05-22
•
Expires: 1979-11-05
Abstract
No abstract record available.
Inventors
- 👤 Paul E Wilkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:02
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/28; B29C65/48; B29C65/4895; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/5229; B29C66/52291; B29C66/52292; B29C66/70; B29C66/71; B29C66/73; B29C66/731; B29C66/7312; B29C66/73121; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81421; B29C66/81423; B29C66/82; B29C66/822; B29C66/8221; B29C66/83; B29C66/832; B29C66/8324; B29C66/84; B29C66/861; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/0608; B29K2023/065; B29L; B29L2031/00; B29L2031/24; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1788; Y10T156/1793
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN THE METHOD FOR WELDING JOINTS OF POLYETHLENE PIPE TOGETHER BY INSERTING SAID PIPE INTO POLYSTHLENE COUPLING AND HEATING THE COUPLING AND PIPE TO FUSE SAME TOGETHER, THE IMPROVEMENT COMPRISING HEATING A COUPLING MADE OF POLYETHYLENE HAVING A MELT INDEX OF LESS THAN 0.2 TO A TEMPERATURE IN THE RANGE OF ABOUT 300 TO ABOUT 600*F.; INSERTING SAID JOINTS INTO SAID HEATED COUPLING; AND MAINTAINING SAID JOINTS IN SAID COUPLING UNTIL THE COUPLING HAS COOLED TO AMBIENT TEMPERATURE.
Claim 2
Dependent Claim
78 words
IN THE METHOD FOR WELDING JOINTS OF POLYETHLENE PIPE TOGETHER BY INSERTING SAID PIPE INTO POLYSTHLENE COUPLING AND HEATING THE COUPLING AND PIPE TO FUSE SAME TOGETHER, THE IMPROVEMENT COMPRISING HEATING A COUPLING MADE OF POLYETHYLENE HAVING A MELT INDEX OF LESS THAN 0.2 TO A TEMPERATURE IN THE RANGE OF ABOUT 300 TO ABOUT 600*F.; INSERTING SAID JOINTS INTO SAID HEATED COUPLING; AND MAINTAINING SAID JOINTS IN SAID COUPLING UNTIL THE COUPLING HAS COOLED TO AMBIENT TEMPERATURE.
References Cited (Backward Citations)
US2375586A
Cited
US2498831A
Cited
US2642911A
Cited
US2739829A
Cited
US2751321A
Cited
FR1115103A
Cited
US2839441A
Cited
DE1048106B
Cited
US2930634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |