Patent US1448950A successfully refreshed from Google Patents.
Patent US2944880A successfully refreshed from Google Patents.
US2944880A
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
2026-10-25 08:01
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1454; C09K3/1472
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A METAL LAPPING COMPOUND CONSISTING ESSENTIALLY OF FROM 1 TO 20 PERCENT BY WEIGHT OF AN ORGANOPHILLIC GELLING AGENT FROM 5 TO 40 BY WEIGHT OF ZIRCONUIM SILICATE PARTICLES 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
52 words
A METAL LAPPING COMPOUND CONSISTING ESSENTIALLY OF FROM 1 TO 20 PERCENT BY WEIGHT OF AN ORGANOPHILLIC GELLING AGENT FROM 5 TO 40 BY WEIGHT OF ZIRCONUIM SILICATE PARTICLES 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)
US1986243A
Cited
US2006162A
Cited
US2233585A
Cited
US2531427A
Cited
US2673146A
Cited
US2780041A
Cited
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 |