Patent US2828240A successfully refreshed from Google Patents.
US2828240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging material
Assignee: General Foods Corp
•
Filing: 1954-10-22
•
Granted: 1958-03-25
•
Expires: 1974-10-22
Abstract
No abstract record available.
Inventors
- 👤 Robert De S Couch
- 👤 Yezek Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:04
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/35; D21H17/46; D21H17/54; D21H17/55; D21H17/60; D21H17/61; D21H23/00; D21H23/02; D21H23/22; D21H23/32; D21H23/42; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR MAKING LAMINATED PACKAGING MATERIAL HIGHLY RESISTANT TO THE TRANSFER OF WATER VAPOR THERETHROUGH WHICH COMPRISES JUXTAPOSING TWO FLAT PLIES, ONE COMPRISING 5-40 POINT BOARD IN THE RANGE OF 20-160 LBS. WEIGHT PER THOUSAND SQUARE FEET AND PREVIOUSLY IMPREGNATED WITH A MOISTURE-RESISTANT MATERIAL AMOUNTING TO AT LEAST 10% BY WEIGHT OF THE BOARD THE MAJOR PROTION OF WHICH IS ABSORBED INTO THE BOARD BENEATH ITS OPPOSITE SURFACES, THE OTHER PLY COMPRISING PAPER IN THE RANGE OF 8-90 LBS. WEIGHT PER THREE THOUSAND SQUARE FEET, COATING THE JUXTAPOSED SURFACE OF ONE OF SAID PLIES WITH A MOISTURE-RESISTANT ADHESIVE MATERIAL DISTRIBUTED SUBSTANTIALLY UNIFORMLY OVER SAID SURFACES, AND PRESSING THE PLIES TOGETHER.
Claim 2
Dependent Claim
17 words
THE PROCESS DEFINED IN CLAIM 3, SAID IMPREGNANT BEING PARAFFINIC WAX AND SAID ADHESIVE BEING MICROCRYSTALLINE WAX.
References Cited (Backward Citations)
US395645A
Cited
FR542079A
Cited
US1217819A
Cited
US1408746A
Cited
US1618491A
Cited
US2158754A
Cited
GB464751A
Cited
US2290741A
Cited
US2296171A
Cited
US2376899A
Cited
US2434106A
Cited
US2568349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |