US3062685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical processing equipment
Assignee: Pfaudler Permutit Inc
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Filing: 1954-06-14
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Granted: 1962-11-06
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Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 Elbert A Sanford
- 👤 Su Gouq Jen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:06
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/089; B; B01; B01J; B01J19/00; B01J19/0053; B01J19/0066; B01J19/0073; B01J19/02; C23; C23D; C23D5/00; B01J2219/00; B01J2219/02; B01J2219/0204; B01J2219/0209; Y; Y10; Y10S; Y10S220/00; Y10S220/917; Y10T; Y10T428/00; Y10T428/26; Y10T428/263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A MATERIAL OF CONSTRUCTION RESISTANT TO CHEMICAL ATTACK, CORROSION, MECHANICAL SHOCK AND THERMAL SHOCK, COMPRISING A NON-POROUS CONTINUOUS SURFACE OF CHEMICAL GLASS HAVING A THICKNESS IN EXCESS OF .004 INCH, FUSED TO A METAL ALLOY, SAID METAL ALLOY HAVING A HIGHER COEFFICIENT OF THERMAL EXPANSION THAN SAID GLASS.
Claim 2
Dependent Claim
48 words
A MATERIAL OF CONSTRUCTION RESISTANT TO CHEMICAL ATTACK, CORROSION, MECHANICAL SHOCK AND THERMAL SHOCK, COMPRISING A NON-POROUS CONTINUOUS SURFACE OF CHEMICAL GLASS HAVING A THICKNESS IN EXCESS OF .004 INCH, FUSED TO A METAL ALLOY, SAID METAL ALLOY HAVING A HIGHER COEFFICIENT OF THERMAL EXPANSION THAN SAID GLASS.
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) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |