US3255567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating multiply assemblies
Assignee: PPG Industries Inc
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Filing: 1962-08-02
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Granted: 1966-06-14
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Expires: 1982-08-02
Abstract
No abstract record available.
Inventors
- 👤 Leroy D Keslar
- 👤 John S Rankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:44
CPC Classifications
B; B32; B32B; B32B37/00; B29; B29C; B29C43/00; B29C43/32; B29C43/36; B29C43/3642; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C65/228; B29C65/229; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/433; B29C66/70; B29C66/72; B29C66/723; B29C66/73; B29C66/735; B29C66/7352; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/818; B29C66/82; B29C66/822; B29C66/8221; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/8324; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/10165; B32B17/10174; B32B17/10366; B32B17/10807; B32B17/10816; B29C66/71; B29C66/812; B29C66/8122; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2067/00; B29K2823/00; B29K2823/04; B29K2823/06; B29K2867/00; B29K2877/00; B29K2995/00; B29K2995/0037; B29K2995/007; B29K2995/0072; B29K2995/0074; B29L; B29L2031/00; B29L2031/712; B29L2031/7126; B29L2031/7128
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
168 words
A METHOD OF PREPARING A MULTIPLY ASSEMBLY FOR LAMINATION COMPRISING SUPERIMPOSING THE PLIES OF THE ASSEMBLY TO BE LAMINATED UPON ONE ANOTHER IN A DESIRED CONFIGURATION, ENCLOSING THE ASSEMBLY WITHIN A HEAT SEALABLE FLEXIBLE BAG HAVING EMBOSSED INTERIOR SURFACES WHILE LEAVING AN ACCESS OPENING, PLACING THE BAG ON A HEATING ELEMENT THAT IS SUPPORTED ON A JAW SURROUNDED BY A FRAME OF GASKET MATERIAL WITH ITS ACCESS OPENING BEYOND SAID HEATING ELEMENT AND WITHIN SAID FRAME OF GASKET MATERIAL PLACING ANOTHER JAW SURROUNDED BY A FRAME OF GASKET MATERIAL ABOVE THE FIRST JAW WITH THE FRAMES OF GASKET MATERIAL IN ALIGNMENT TO FORM A SEALED CHAMBER SURROUNDING THE ACCESS OPENING, EVACUATING SAID BAG THROUGH SAID ACCESS OPENING AND ALONG PASSAGEWAYS PROVIDED BY THE EMBOSSED INTERIOR SURFACES OF SAID BAG BY EVACUATING SAID SEALED CHAMBER AND, WHEN THE PRESSURE WITHIN SAID SEALED CHAMBER IS REDUCED TO A PREDETERMINED AMOUNT, ENERGIZING SAID HEATING ELEMENT FOR A PERIOD OF TIME SUFFICIENT TO HEAT SEAL SAID ACCESS OPENING WHILE CONTINUING SAID EVACUATION.
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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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |