Patent US4304578A successfully refreshed from Google Patents.
US3058863A
Expired / Lapsed
US
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Polyethylene structures
Assignee: Union Carbide Corp
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Filing: 1959-05-08
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Granted: 1962-10-16
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Expires: 1979-05-08
Abstract
No abstract record available.
Inventors
- 👤 Robert W Gaines
- 👤 Harold A Arbit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:21
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/04; D06N3/045; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/20; B29C70/28; B29C70/40; B29C70/50; B29C70/68; B29C70/82; B32; B32B; B32B27/00; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/227; D06M17/00; D06N3/0002; D06N3/0015; D06N3/0038; D06N3/0086; D06N3/0088; B29C70/685; B29C70/687; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2223/00; B29K2223/04; B29K2223/06; D06N2209/00; D06N2209/12; D06N2209/126; D06N2209/128; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24132; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T442/00; Y10T442/30; Y10T442/3382; Y10T442/3854; Y10T442/3886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A MULTI-PLY, SELF-SUPPORTING, MOISTURE-RESISTANT AND SUBSTANTIALLY MOISTURE-IMPERVIOUS POLYOLEFIN STRUCTURE, COMPRISING AT LEAST ABOUT ONE PLY OF A POLYTHYLENE FILM OF A THICKNESS OF FROM ABOUT 1 TO ABOUT 20 MILS WHEREIN THE POLYETHYLENE THEREOF HAS A DENSITY OF AT LEAST ABOUT 0.91 G./CC. AT 23* C. AND AT LEAST ONE PLY OF A FIBROUS POLYALKYLENE FABRIC SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE FIBERS HAVING A DENSITY OF AT LEAST ABOUT 0.93G/CC. AT 23* C. AND A MELT INDEX OF FROM ABOUT 0.5 TO ABOUT 20 DGM./MIN. AND POLYPROLENE FIBERS HAVING A DENSITY OF AT LEAST 0.91 G./CC. AT 23* C. WHEREIN SAID FABRIC HAS A WEIGHT OF FROM ABOUT 0.05 TO ABOUT 20 OUNCES PER SQUARE YARD, SAID PLIES BEING IN ALTERNATING ORDER AND ADHERING TO EACH OTHER, AND SAID POLYOLEFIN STRUCTURE HAVING SIMULTANEOUS BIAXIAL SHRINKAGE OF AT LEAST ABOUT 7.5 PERCENT IN ONE DIRECTION AND OF AT LEAST TWICE SAID SHRINKAGE IN THE OTHER DIRECTION WHEN HEATED IN A LIQUID BATH AT A TEMPPERATURE OF ABOUT 120* C.
Claim 2
Dependent Claim
170 words
A MULTI-PLY, SELF-SUPPORTING, MOISTURE-RESISTANT AND SUBSTANTIALLY MOISTURE-IMPERVIOUS POLYOLEFIN STRUCTURE, COMPRISING AT LEAST ABOUT ONE PLY OF A POLYTHYLENE FILM OF A THICKNESS OF FROM ABOUT 1 TO ABOUT 20 MILS WHEREIN THE POLYETHYLENE THEREOF HAS A DENSITY OF AT LEAST ABOUT 0.91 G./CC. AT 23* C. AND AT LEAST ONE PLY OF A FIBROUS POLYALKYLENE FABRIC SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE FIBERS HAVING A DENSITY OF AT LEAST ABOUT 0.93G/CC. AT 23* C. AND A MELT INDEX OF FROM ABOUT 0.5 TO ABOUT 20 DGM./MIN. AND POLYPROLENE FIBERS HAVING A DENSITY OF AT LEAST 0.91 G./CC. AT 23* C. WHEREIN SAID FABRIC HAS A WEIGHT OF FROM ABOUT 0.05 TO ABOUT 20 OUNCES PER SQUARE YARD, SAID PLIES BEING IN ALTERNATING ORDER AND ADHERING TO EACH OTHER, AND SAID POLYOLEFIN STRUCTURE HAVING SIMULTANEOUS BIAXIAL SHRINKAGE OF AT LEAST ABOUT 7.5 PERCENT IN ONE DIRECTION AND OF AT LEAST TWICE SAID SHRINKAGE IN THE OTHER DIRECTION WHEN HEATED IN A LIQUID BATH AT A TEMPPERATURE OF ABOUT 120* C.
References Cited (Backward Citations)
GB641568A
Cited
US2734289A
Cited
GB491804A
Cited
US2561063A
Cited
US2598090A
Cited
US2714571A
Cited
GB726949A
Cited
US2758045A
Cited
US2851389A
Cited
US2932323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |