US2876086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive structures and method of making
Assignee: 3M Co
•
Filing: 1954-06-21
•
Granted: 1959-03-03
•
Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Albert E Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:34
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/001; B24D11/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD FOR PRODUCING A FLEXIBLE COATED ABRASIVE SHEET HAVING ELONGATED ABRASIVE PARTICLES REGULAR UNIFORMLY INDIVIDUALLY SPACED IN AN ORIENTED POSITION THEREON COMPRISING COATING A FLEXIBLE BACKING SHEET WITH A LAYER OF A HARDENABLE GRIT BONDING ADHESIVE, PLACING IN SAID ADHESIVE ELONGATED ABRASIVE PARTICLES IN INDIVIDUAL SPACED RELATION WITH REGULAR SPACING THEREBETWEEN, ORIENTING SAID PARTICLES TO A POSITION SUCH THAT THE LONG AXES THEREOF ARE SUBSTANTIALLY NORMAL TO SAID BACKING, AND HARDENING THE ADHESIVE WHILE SAID PARTICLES REMAIN ORIENTED.
Claim 2
Independent Claim
79 words
A METHOD FOR PRODUCING A FLEXIBLE COATED ABRASIVE SHEET HAVING ELONGATED ABRASIVE PARTICLES REGULAR UNIFORMLY INDIVIDUALLY SPACED IN AN ORIENTED POSITION THEREON COMPRISING COATING A FLEXIBLE BACKING SHEET WITH A LAYER OF A HARDENABLE GRIT BONDING ADHESIVE, PLACING IN SAID ADHESIVE ELONGATED ABRASIVE PARTICLES IN INDIVIDUAL SPACED RELATION WITH REGULAR SPACING THEREBETWEEN, ORIENTING SAID PARTICLES TO A POSITION SUCH THAT THE LONG AXES THEREOF ARE SUBSTANTIALLY NORMAL TO SAID BACKING, AND HARDENING THE ADHESIVE WHILE SAID PARTICLES REMAIN ORIENTED.
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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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |