Patent US4778698A successfully refreshed from Google Patents.
US4778698A
Expired / Lapsed
US
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Innerseal for container for use with liquid contents
Assignee: Illinois Tool Works Inc
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Filing: 1987-03-26
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Granted: 1988-10-18
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Expires: 2007-03-26
Abstract
Abstract Innerseal suitable for use with containers made from glass. The innerseal of this invention comprises a facing bearing a layer of amorphous polyester on one major surface thereof. The innerseal forms a strong bond to glass and resists moisture better than do conventional innerseals.
Inventors
- 👤 David T. Ou-Yang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:41
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/18; B65D51/20; B65D23/00; B65D23/02; B65D2251/00; B65D2251/0003; B65D2251/0006; B65D2251/0015; B65D2251/0068; B65D2251/0093; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2041; B65D2577/205; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1328; Y10T428/1331; Y10T428/28; Y10T428/2804; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
45 words
Container made of glass that has been treated with a fluorine-containing compound, said container having an innerseal that comprises a facing bearing a coating of amorphous polyester thereon, said facing comprising metallic foil, said coating of amorphous polyester being in contact with the said container.
Claim 2
Dependent Claim
45 words
Container made of glass that has been treated with a fluorine-containing compound, said container having an innerseal that comprises a facing bearing a coating of amorphous polyester thereon, said facing comprising metallic foil, said coating of amorphous polyester being in contact with the said container.
Claim 3
Dependent Claim
12 words
The container of claim 1 wherein the glass is a soda-lime-silica glass.
Claim 4
Dependent Claim
20 words
The container of claim 11 wherein said amorphous polyester has a degree of crystallinity equal to or less than 40%.
Claim 5
Dependent Claim
79 words
The container of claim 1 wherein said amorphous polyester has an intrinsic viscosity less than about 0.90, a glass transition temperature less than about 90° C., a softening point of at least about 25° C., an acid number less than or equal to about 55 or an hydroxyl number less than or equal to about 50 or both an acid number less than or equal to about 55 and an hydroxyl number less than or equal to about 50.
Claim 6
Dependent Claim
12 words
The container of claim 1 wherein said facing is a metallic foil.
Claim 7
Dependent Claim
17 words
The container of claim 1 wherein said facing is a laminate comprising metallic foil and polymeric film.
Claim 8
Dependent Claim
62 words
The container of claim 1 wherein said amorphous polyester is a copolymer derived from (a) reacting at least two polyhydric alcohols with one organic acid or esters derived therefrom, (b) reacting at least two organic acids or ester derived therefrom with one polyhydric alcohol, or (c) reacting at least two organic acids or esters derived therefrom with at least two polyhydric alcohols.
Claim 9
Dependent Claim
23 words
The container of claim 1 wherein said amorphous polyester is derived from a reaction among a terephthalate, an isophthalate, and a polyhydric alcohol.
Claim 10
Dependent Claim
28 words
The container of claim 1 wherein said amorphous polyester is derived from a reaction among a phthalic acid or derivative thereof, a glycol, and a second polyhydric alcohol.
Claim 11
Dependent Claim
16 words
The container of claim 1 wherein said innerseal has a tab extending from the periphery thereof.
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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) | 1991-10-18 | 1992-04-18 | 1992-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-18 | 1996-04-18 | 1996-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-18 | 2000-04-18 | 2000-10-18 | $7700.00 | Window Closed / Lapsed |