US3051589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant coated equipment and methods of making the same
Assignee: Pfaudler Permutit Inc
•
Filing: 1958-08-13
•
Granted: 1962-08-28
•
Expires: 1978-08-13
Abstract
No abstract record available.
Inventors
- 👤 Elbert A Sanford
- 👤 Warren George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:26
CPC Classifications
C; C03; C03C; C03C4/00; C23; C23D; C23D5/00; C03C2204/00; C03C2204/04; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/259
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
THE METHOD OF APPLYING A GLOSSY CORROSION RESISTANT FUSED VITREOUS COATING TO THE SURFACE OF A METALLIC BODY COMPRISING THE STEPS OF APPLYING TO SAID SURFACE A FUSED ENAMEL GROUND COAT, FORMING A COVER COAT FRIT AND ADDING THERETO A QUANTITY OF DISCRETE PARTICLES OF INERT REFRACTORY MATERIAL HAVING A MELTING POINT HIGHER THAN THE FUSING TEMPERATURE OF SAID FRIT, SAID PARTICLES BEING OF TWO SIZES, THE SMALL OF SAID PARTICLES BEING BETWEEN 500 AND 100 MESH, AND THE LARGE OF SAID PARTICLES BEING BETWEEN 200 TO 80 MESH, THE QUANTITY OF SAID PARTICLES BEING INSUFFICIENT TO DESTROY THE GLOSSY SURFACE OF SAID COATING, APPLYING THE MIXTURE OF SAID FRIT AND REFRACTORY PARTICLES OVER SAID GROUND COAT, AND HEATING AND FUSING SAID FRIT TO FORM A
Claim 2
Independent Claim
126 words
THE METHOD OF APPLYING A GLOSSY CORROSION RESISTANT FUSED VITREOUS COATING TO THE SURFACE OF A METALLIC BODY COMPRISING THE STEPS OF APPLYING TO SAID SURFACE A FUSED ENAMEL GROUND COAT, FORMING A COVER COAT FRIT AND ADDING THERETO A QUANTITY OF DISCRETE PARTICLES OF INERT REFRACTORY MATERIAL HAVING A MELTING POINT HIGHER THAN THE FUSING TEMPERATURE OF SAID FRIT, SAID PARTICLES BEING OF TWO SIZES, THE SMALL OF SAID PARTICLES BEING BETWEEN 500 AND 100 MESH, AND THE LARGE OF SAID PARTICLES BEING BETWEEN 200 TO 80 MESH, THE QUANTITY OF SAID PARTICLES BEING INSUFFICIENT TO DESTROY THE GLOSSY SURFACE OF SAID COATING, APPLYING THE MIXTURE OF SAID FRIT AND REFRACTORY PARTICLES OVER SAID GROUND COAT, AND HEATING AND FUSING SAID FRIT TO FORM A
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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |