US3372049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin film composition, film, and pressure-sensitive adhesive sheet material
Assignee: 3M Co
•
Filing: 1961-10-09
•
Granted: 1968-03-05
•
Expires: 1981-10-09
Abstract
No abstract record available.
Inventors
- 👤 Albert N Schaffhausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:58
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0815; C08L23/10; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/24; C09J7/241; C09J7/243; C08L2205/00; C08L2205/02; C08L2205/025; C08L2207/00; C08L2207/06; C08L2207/07; C08L2207/10; C08L2207/14; C08L23/16; C08L23/18; C08L23/20; C08L2314/00; C08L2314/02; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A POLY-MONO-ALPHA-OLEFINIC COMPOSITION WHICH CAN BE FORMED INTO A SHEET CAPABLE OF BIAXIAL ORIENTATION TO A UNIFORM THICKNESS OF AT LEAST ABOUT 1 MIL AND TO A TENSILE STRENGTH OF SUBSTANTIALLY MORE THAN 6,000 P.S.I. IN MUTUALLY PERPENDICULAR DIRECTIONS, COMPRISING A UNIFORM PHYSICAL BLEND, SOLID AT ROOM TEMPERATURE, OF POLYMERS CONSISTING ESSENTIALLY OF FROM ABOUT 50% TO ABOUT 75% PREDOMINANTLY CRYSTALLINE ISOTACTIC POLYPROPYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 250,000 AND CORRESPONDINGLY FROM ABOUT 50% TO ABOUT 25% OF AT LEAST ONE SEPARATELY PREPARED PREDOMINANTLY CRYSTALLINE POLY-MONOALPHA-OLEFINIC HOMOPOLYMER OTHER THAN POLYPROPYLENE.
Claim 2
Dependent Claim
93 words
A POLY-MONO-ALPHA-OLEFINIC COMPOSITION WHICH CAN BE FORMED INTO A SHEET CAPABLE OF BIAXIAL ORIENTATION TO A UNIFORM THICKNESS OF AT LEAST ABOUT 1 MIL AND TO A TENSILE STRENGTH OF SUBSTANTIALLY MORE THAN 6,000 P.S.I. IN MUTUALLY PERPENDICULAR DIRECTIONS, COMPRISING A UNIFORM PHYSICAL BLEND, SOLID AT ROOM TEMPERATURE, OF POLYMERS CONSISTING ESSENTIALLY OF FROM ABOUT 50% TO ABOUT 75% PREDOMINANTLY CRYSTALLINE ISOTACTIC POLYPROPYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 250,000 AND CORRESPONDINGLY FROM ABOUT 50% TO ABOUT 25% OF AT LEAST ONE SEPARATELY PREPARED PREDOMINANTLY CRYSTALLINE POLY-MONOALPHA-OLEFINIC HOMOPOLYMER OTHER THAN POLYPROPYLENE.
References Cited (Backward Citations)
GB217125A
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US2631954A
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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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |