Patent US3061475A successfully refreshed from Google Patents.
US3061475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing packaging material
Assignee: OI Glass Inc
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Filing: 1957-05-20
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Granted: 1962-10-30
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Expires: 1977-05-20
Abstract
No abstract record available.
Inventors
- 👤 Robert T Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:32
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/14; B29L; B29L2009/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR PRODUCING A FOAM PLASTIC AND PAPER LAMINATION COMPRISING THE STEPS OF PARTIALLY REACTING A LIQUID MIXTURE OF CELLULAR PLASTIC FORMING MATERIALS, SAID LIQUID MIXTURE INCLUDING AN AROMATIC DIISOCYANTE, A POLYOL, CATALYST, AND WATER, COATING A SHEET OF PAPER WITH SAID MIXTURE WHILE THE LATTER IS IN A PARTIALLY REACTED AND PARTIALLY FOAMED CONDITION, WHEREBY SAID REACTION CONTINUES WHILE SAID MIXTURE REMAINS IN CONTACT WITH SAID PAPER AND CHEMICALLY BONDS SAID CELLULAR PLASTIC THERETO.
Claim 2
Dependent Claim
76 words
A PROCESS FOR PRODUCING A FOAM PLASTIC AND PAPER LAMINATION COMPRISING THE STEPS OF PARTIALLY REACTING A LIQUID MIXTURE OF CELLULAR PLASTIC FORMING MATERIALS, SAID LIQUID MIXTURE INCLUDING AN AROMATIC DIISOCYANTE, A POLYOL, CATALYST, AND WATER, COATING A SHEET OF PAPER WITH SAID MIXTURE WHILE THE LATTER IS IN A PARTIALLY REACTED AND PARTIALLY FOAMED CONDITION, WHEREBY SAID REACTION CONTINUES WHILE SAID MIXTURE REMAINS IN CONTACT WITH SAID PAPER AND CHEMICALLY BONDS SAID CELLULAR PLASTIC THERETO.
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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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |