US3617428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugated fiberboard
Assignee: Alton Box Board Co
•
Filing: 1969-09-05
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Granted: 1971-11-02
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Expires: 1989-09-05
Abstract
Abstract Corrugated fiberboard which resists deterioration in strength when in the presence of moisture or water. Such board is made by treating medium and, optionally, liner members with an aminoplast containing phenol-aldehyde resole resin composition and thereafter bonding corrugated medium to liner members with a thermoplastic waterproof adhesive system containing substantially fully hydrolyzed polyvinyl alcohol.
Inventors
- 👤 Robert P Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:48
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/002; B32B29/005; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2804; B31F1/2809; B32B3/00; B32B3/26; B32B3/28; B32B7/00; B32B7/04; B32B7/12; B65; B65D; B65D65/00; B65D65/38; B65D65/40; B65D65/403; B32B2255/00; B32B2255/12; B32B2255/26; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
A construction of claim 1 which has been subjected to temperatures and times sufficient to substantially completely thermoset said aminoplast containing phenol-aldehyde resin system.
Claim 2
Dependent Claim
12 words
A box blank prepared from a corrugated fiberboard construction of claim 1.
Claim 3
Dependent Claim
12 words
A box blank prepared from a corrugated fiberboard construction of claim 2.
Claim 4
Dependent Claim
26 words
The box blank of claim 3 wherein said blank has been subjected to temperatures and times sufficient to substantially completely thermoset and aminoplast-containing phenol-aldehyde resin system.
Claim 5
Dependent Claim
42 words
A construction of claim 1 wherein said liner member is treated with from about 2 to 10 weight percent (dry weight basis) with a said aminoplast containing resin and has a total volatiles content of from about 3 to 10 weight percent.
Claim 6
Dependent Claim
25 words
A construction of claim 6 which has been subjected to combination of temperatures and times sufficient to substantially completely thermoset said aminoplast-containing phenol-aldehyde resin system.
References Cited (Backward Citations)
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US3444119A
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Cited
US3371004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |