US3733309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biaxially oriented poly(ethylene terephthalate)bottle
Assignee: EIDP Inc
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Filing: 1970-11-30
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Granted: 1973-05-15
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Expires: 1990-11-30
Abstract
Abstract A HOLLOW, BIAXIALLY ORIENTED, THERMOPLASTIC ARTICLE, PARTICULARLY A BOTTLE, PREPARED FROM POLYETHYLENE TEREPHTHLATE WHEREIN SAID ARTICLE HAS AN INHERENT VISCOSITY OF AT LEAST 0.55, A DENSITY OF ABOUT 1.331 TO 1.402 AND A RATIO OF ARTICLE WEIGHT IN GRAMS TO VOLUME IN CUBIC CENTIMERS OF ABOUT 0.2 TO 0.005:1. SUCH ARTICLES HAVE EXCELLENT STRENGTH PROPERTIES, ARE IMPACT RESISTANT, AND ARE CAPABLE OF HOLDING LIQUIDS UNDER PRESSURES AS HIGH AS ABOUT 100 P.S.I.G. AT A TEMPERATURE OF ABOUT 50*C. WITHOUT SIGNIFICANT DEFORMATION MAKING SUCH ARTICLES USEFUL IN BOTTLING LIQUIDS UNDER PRESSURE SUCH AS BEER, CARBONATED BEVERAGES, OR AEROSOLS.
Inventors
- 👤 N Wyeth
- 👤 R Roseveare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:42
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/02; B65D1/0223; B65D1/0261; B65D1/0276; B29; B29C; B29C49/00; B29C49/08; B29C49/10; B29C49/14; B29C49/22; B29C49/28; B29C49/30; B65D1/0207; B29C49/42; B29C49/48; B29C2049/4856; B29C2049/4858; B29C2949/00; B29C2949/07; B29C2949/0861; B29C2949/0862; B29C2949/0872; B29C2949/30; B29C2949/3032; B29C2949/3041; B29C33/00; B29C33/20; B29C33/26; Y; Y10; Y10S; Y10S264/00; Y10S264/33; Y10S264/50; Y10S264/64; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/1397
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |