US3318399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: ExxonMobil Upstream Research Co
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Filing: 1965-03-22
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Granted: 1967-05-09
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Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Norman E Garner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:18
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A TOOL FOR PENETRATING ROCK AND SIMILAR MATERIALS WHICH COMPRISES: (A) A TOOL BODY COMPOSED AT LEAST IN PART OF A METALLIC MATRIX; AND, (B) A PLURALITY OF ROUNDED DIAMONDS OF IRREGULAR SHAPE EMBEDDED IN THE SURFACE OF SAID MATRIX AND PROTRUDING THEREFROM, SAID DIAMONDS INCLUDING DRILLING POINTS EXTENDING BEYOND THE MATRIX SURFACE FOR ENGAGING THE MATERIAL TO BE PENETRATED AND AT LEAST A MAJORITY OF SAID DIAMONDS BEING ORIENTED SO THAT
Claim 2
Dependent Claim
72 words
A TOOL FOR PENETRATING ROCK AND SIMILAR MATERIALS WHICH COMPRISES: (A) A TOOL BODY COMPOSED AT LEAST IN PART OF A METALLIC MATRIX; AND, (B) A PLURALITY OF ROUNDED DIAMONDS OF IRREGULAR SHAPE EMBEDDED IN THE SURFACE OF SAID MATRIX AND PROTRUDING THEREFROM, SAID DIAMONDS INCLUDING DRILLING POINTS EXTENDING BEYOND THE MATRIX SURFACE FOR ENGAGING THE MATERIAL TO BE PENETRATED AND AT LEAST A MAJORITY OF SAID DIAMONDS BEING ORIENTED SO THAT
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) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |