US2753992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging methods and products
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1953-09-24
•
Granted: 1956-07-10
•
Expires: 1973-09-24
Abstract
No abstract record available.
Inventors
- 👤 Manchester Randall Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:50
CPC Classifications
B; B65; B65H; B65H75/00; B65D; B65D85/00; B65D85/67; B65D85/671; B65D85/672
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
A METHOD FOR PACKAGING LENGTHS OF COATED ABRASIVE WHICH HAS A TENDENCY TO PICK UP MOISTURE WHEN STORED IN HIGH-HUMIDITY ATMOSPHERES AND TO LOSE MOISTURE WHEN HELD IN DRY ATMOSPHERES WHICH COMPRISES ADJUSTING THE MOISTURE CONTENT OF A SHEET OF SAID COATED ABRASIVE BY SUBJECTING THE SHEET TO A CONTROLLED ATMOSPHERE HAVING A MOISTURE CONTENT EQUIVALENT TO AIR WITH A RELATIVE HUMIDITY OF ABOUT 40 TO 50% AT 70* F, ROLLING SUCH MOISTURECONTENT ADJUSTED SHEET INTO A CYLINDRICAL ROLL AND SPRAYING A RESINOUS BASE COATING COMPOSITION ON THE ENDS OF SAID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |