Patent US2822287A successfully refreshed from Google Patents.
US2822287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moistureproof heat sealable wrapping sheet
Assignee: Kalamazoo Vegetable Parchment Co
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Filing: 1956-07-25
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Granted: 1958-02-04
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Expires: 1976-07-25
Abstract
No abstract record available.
Inventors
- 👤 Phillip H Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:35
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/18; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/24851; Y10T428/24868; Y10T428/24884; Y10T428/24934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A MOISTUREPROOF HEAT SEALABLE WRAPPING SHEET HAVING A VARNISH-LIKE COATING ON ONE SIDE THEREOF, AND A MOISTURE RESISTANT HEAT SEALABLE COATING ON THE OTHER SIDE COMPRISING APPROXIMATELY 25% PARAFFIM WAX, APPROXIMATELY 20% HYDROGENATED CASTOR OIL, APPROXIMATELY 15% ETHYL CELLULOSE, APPROXIMATELY 10% PHENOLIC RESIN, APPROXIMATELY 15% HYDROGENASTED ROSIN, AND APPROXIMATELY 15% 1,1''-ISOPROPYLIDENEBIS (P-PHENYLENEOXY) DI-2-PROPANOL.
Claim 2
Dependent Claim
53 words
A MOISTUREPROOF HEAT SEALABLE WRAPPING SHEET HAVING A VARNISH-LIKE COATING ON ONE SIDE THEREOF, AND A MOISTURE RESISTANT HEAT SEALABLE COATING ON THE OTHER SIDE COMPRISING APPROXIMATELY 25% PARAFFIM WAX, APPROXIMATELY 20% HYDROGENATED CASTOR OIL, APPROXIMATELY 15% ETHYL CELLULOSE, APPROXIMATELY 10% PHENOLIC RESIN, APPROXIMATELY 15% HYDROGENASTED ROSIN, AND APPROXIMATELY 15% 1,1''-ISOPROPYLIDENEBIS (P-PHENYLENEOXY) DI-2-PROPANOL.
References Cited (Backward Citations)
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Cited
US2099301A
Cited
GB458519A
Cited
US2211931A
Cited
US2271492A
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US2290132A
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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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |