US2970932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paperboard having a water-repellent coating
Assignee: Fibreboard Paper Products Corp
•
Filing: 1958-05-19
•
Granted: 1961-02-07
•
Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 Melvin C Edlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:36
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/80; D21H19/82; D21H19/824; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/24884; Y10T428/24893; Y10T428/31504; Y10T428/31801
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A WATER-REPELLENT PAPERBOARD PRODUCT COMPRISING PAPERBOARD, A DISCONTINUOUS COATING ON SAID PAPERBOARD OF ORGANIC SILICONIC ACID POLYMER PARTICLES DERIVED PRIMARILY FROM AN ORGANIC SILICONIC ACID THAT HAS A SINGLE ORGANIC RADICAL ATTACHED TO THE SILICON ATOM, AND A SUBSTANTIALLY CONTINUOUS COATING OF WAX OVERLYING SAID DISCONTINUOUS COATING OF ORGANIC SILICONIC ACID POLYMER PARTICLES.
Claim 2
Dependent Claim
53 words
A WATER-REPELLENT PAPERBOARD PRODUCT COMPRISING PAPERBOARD, A DISCONTINUOUS COATING ON SAID PAPERBOARD OF ORGANIC SILICONIC ACID POLYMER PARTICLES DERIVED PRIMARILY FROM AN ORGANIC SILICONIC ACID THAT HAS A SINGLE ORGANIC RADICAL ATTACHED TO THE SILICON ATOM, AND A SUBSTANTIALLY CONTINUOUS COATING OF WAX OVERLYING SAID DISCONTINUOUS COATING OF ORGANIC SILICONIC ACID POLYMER PARTICLES.
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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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |