US2759252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for sealing an iron member to a glass part
Assignee: Hartford National Bank and Trust Co
•
Filing: 1952-08-15
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Granted: 1956-08-21
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Expires: 1972-08-15
Abstract
No abstract record available.
Inventors
- 👤 Hendrik Johannes Meerka Embden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:55
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/046; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12597
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD FOR SEALING AN IRON MEMBER TO A LEADGLASS PART SEALABLE TO A FERRO-CHROMIUM PART, WHICH COMPRISES THE STEPS OF COATING SAID IRON MEMBER WITH A METAL LAYER CONSISTING OF ABOUT 20 TO 30% CHROMIUM AND THE REMAINDER IRON AT LEAST ON AN AREA AT WHICH SAID IRON MEMBER IS TO BE SEALED TO SAID LEAD-GLASS PART, THEREAFTER REMOVING THE IRON UNDERLYING THE FERRO-CHROMIUM METAL LAYER AT THE AREA THEREOF TO BE SEALED TO SAID GLASS PART SO THAT ONLY THE LAYER REMAINS, AND SEALING ONLY SAID REMAINING FERRO-CHROMIUM METAL LAYER AT SAID AREA TO SAID LEAD-GLASS PART.
Claim 2
Independent Claim
99 words
A METHOD FOR SEALING AN IRON MEMBER TO A LEADGLASS PART SEALABLE TO A FERRO-CHROMIUM PART, WHICH COMPRISES THE STEPS OF COATING SAID IRON MEMBER WITH A METAL LAYER CONSISTING OF ABOUT 20 TO 30% CHROMIUM AND THE REMAINDER IRON AT LEAST ON AN AREA AT WHICH SAID IRON MEMBER IS TO BE SEALED TO SAID LEAD-GLASS PART, THEREAFTER REMOVING THE IRON UNDERLYING THE FERRO-CHROMIUM METAL LAYER AT THE AREA THEREOF TO BE SEALED TO SAID GLASS PART SO THAT ONLY THE LAYER REMAINS, AND SEALING ONLY SAID REMAINING FERRO-CHROMIUM METAL LAYER AT SAID AREA TO SAID LEAD-GLASS PART.
References Cited (Backward Citations)
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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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |