Patent US3756850A successfully refreshed from Google Patents.
US3756850A
Expired / Lapsed
US
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Anti stain treatment for lumber in transit
Assignee: SCM (Canada) Ltd
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Filing: 1971-05-12
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Granted: 1973-09-04
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Expires: 1991-05-12
Abstract
Abstract DISCLOSED ARE METHODS AND COMPOSITIONS FOR PREVENTING OR MINIMIZING STAINING OF LUMBER DURING TRANSIT, PARTICULARLY DURING RAIL AND SHIP TRANSIT, UNDER CONDITIONS OF EXPOSURE TO IRON CONTAMINANTS BY ADHERING TO THE LUMBER AN ESSENTIALLY ALTINCTORIL DEPOSIT OF EXPOSED PARTICLES OF A SLOW-LEACHING BASE IN AN AMOUNT SUFFICIENT TO MAINTAIN THE SURFACE OF THE LUMBER AT A PH AT ABOUT 10 OR ABOVE FOR THE PERIOD OF TRANSIT.
Inventors
- 👤 L Story
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:13
CPC Classifications
C; C09; C09D; C09D15/00; C09D191/00; C09D191/06; C09D5/00; C09D5/008; C09D7/00; C09D7/40; C09D7/60; C09D7/61; C08; C08K; C08K3/00; C08K3/10; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31971; Y10T428/31989
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |