US3630348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package comprising paper containing a formaldehyde releasing thermosetting resin
Assignee: Fitchburg Paper Co
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Filing: 1968-07-16
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Granted: 1971-12-28
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Expires: 1988-07-16
Abstract
Abstract A package having a wall, or sheet contained therein, impregnated or coated with a formaldehyde containing uncured resin having pH in the range of 4-9 so that formaldehyde is gradually released upon cure to sterilized articles within the package.
Inventors
- 👤 Ronald L Benson
- 👤 Christo Antonio
- 👤 John H Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:22
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/36; A; A61; A61B; A61B50/00; A61B50/30; A61M; A61M5/00; A61M5/002; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A package, said package containing an article, a sheet of paper material being wrapped about said article, said sheet of paper material containing a thermosetting resin which is no more than 90 percent cured comprising a substantial quantity of -CH2OH groups capable of releasing fRee formaldehyde on heating, said sheet of material having a pH in the range of 4 to 9, said package having wall means, said wall means having a vapor transmission proof coating thereon, said resin being present in an amount ranging from 0.5 to 90 percent by weight of said wall means.
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |