Patent US2709147A successfully refreshed from Google Patents.
US2709147A
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Methods for bonding silica bodies
Assignee: AT&T Inc
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Filing: 1951-09-12
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Granted: 1955-05-24
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Expires: 1971-09-12
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Ziegler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:14
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/06; C03C27/08; H; H10; H10N; H10N30/00; H10N30/01; H10N30/07; H10N30/072; H10N30/073; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE METHOD OF BONDING SILICA BODIES TOGETHER WHICH COMPRISES FORMING SMOOTH MATING SURFACES ON EACH OF SAID BODIES, APPLYING A COATING OF INDIUM TO THE SMOOTH SURFACES, BURNISHING THE INDIUM COATINGS, PLACING THE COATED SURFACES IN FACE TO FACE ENGAGEMENT IN AN AVACUATED CHAMBER, AND HEATING THE BODY AND MEMBER.
Claim 2
Independent Claim
50 words
THE METHOD OF BONDING SILICA BODIES TOGETHER WHICH COMPRISES FORMING SMOOTH MATING SURFACES ON EACH OF SAID BODIES, APPLYING A COATING OF INDIUM TO THE SMOOTH SURFACES, BURNISHING THE INDIUM COATINGS, PLACING THE COATED SURFACES IN FACE TO FACE ENGAGEMENT IN AN AVACUATED CHAMBER, AND HEATING THE BODY AND MEMBER.
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Cited
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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) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |