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Patent US2944879A successfully refreshed from Google Patents.
US2944879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lapping compound
Assignee: Kenmore Research Co
•
Filing: 1957-04-25
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Granted: 1960-07-12
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Expires: 1977-04-25
Abstract
No abstract record available.
Inventors
- 👤 Lloyd R Allen
- 👤 Dudley H Woodard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:07
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1454; C09K3/1472
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METAL LAPPING COMPOUND CONSISTING ESSENTIALLY OF FROM 1 TO 20 PERCENT BY WEIGHT OF AN ORGANOPHILIC CLAY AS A GELLING AGENT AND FROM 5 TO 40 PERCENT BY WEIGHT OF ABRASIVE RANGING IN SIZE FROM 80 GRIT TO 1 MICRON, AND THE BALANCE FROM 40 TO 94 PERCENT OF LOW BOILING POINT KEROSENE HYDROCARBONS.
Claim 2
Dependent Claim
55 words
A METAL LAPPING COMPOUND CONSISTING ESSENTIALLY OF FROM 1 TO 20 PERCENT BY WEIGHT OF AN ORGANOPHILIC CLAY AS A GELLING AGENT AND FROM 5 TO 40 PERCENT BY WEIGHT OF ABRASIVE RANGING IN SIZE FROM 80 GRIT TO 1 MICRON, AND THE BALANCE FROM 40 TO 94 PERCENT OF LOW BOILING POINT KEROSENE HYDROCARBONS.
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) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |