US2602758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single fire enameling process and article
Assignee: Armco Inc
•
Filing: 1950-03-22
•
Granted: 1952-07-08
•
Expires: 1970-03-22
Abstract
No abstract record available.
Inventors
- 👤 Theodore F Olt
- 👤 Jesse J Canfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:53
CPC Classifications
C; C23; C23D; C23D5/00; C23D3/00; C23D5/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A PROCESS OF PRODUCING SMOOTH, CONTINUOUS, LIGHT COLORED PORCELAIN ENAMEL COATINGS ON FERROUS ENAMELING SHEET STOCK FREE FROM GAS FORMING SUBSTANCES PRODUCTIVE OF PITS AND SPOTS, THE COATINGS HAVING A HIGH DEGREE OF ADHERENCE TO THE STOCK, THE STEPS OF IMPOSING UPON THE SURFACE OF SAID STOCK A THIN CONINUOUS COATING OF HIGH ADHERENCE GROUND COAT ENAMEL OF SUCH THICKNESS THAT AFTER FIRING IT HAS A THICKNESS SUBSTANTIALLY BETWEEN .0004 AND .001 INCH, APPLYING AT LEAST ONE SUBSEQUENT CONTINUOUS COATING OF WHITE OR LIGHT COLORED COVER COAT ENAMEL OF SUCH THICKNESS THAT THE TOTAL THICKNESS OF ALL SAID COATS AFTER FIRING IS SUBSTANTIALLY .003 TO .010 INCH, DRYING, AND FIRING SUCH COATS SIMULTANEOUSLY AT THE FIRING TEMPERATURE OF THE COVER COAT, THE FIRING TEMPERATURE OF THE GROUND COAT BEING NOT HIGHER THAN THE FIRING TEMPERATURE OF THE COVER COAT.
Claim 2
Dependent Claim
140 words
IN A PROCESS OF PRODUCING SMOOTH, CONTINUOUS, LIGHT COLORED PORCELAIN ENAMEL COATINGS ON FERROUS ENAMELING SHEET STOCK FREE FROM GAS FORMING SUBSTANCES PRODUCTIVE OF PITS AND SPOTS, THE COATINGS HAVING A HIGH DEGREE OF ADHERENCE TO THE STOCK, THE STEPS OF IMPOSING UPON THE SURFACE OF SAID STOCK A THIN CONINUOUS COATING OF HIGH ADHERENCE GROUND COAT ENAMEL OF SUCH THICKNESS THAT AFTER FIRING IT HAS A THICKNESS SUBSTANTIALLY BETWEEN .0004 AND .001 INCH, APPLYING AT LEAST ONE SUBSEQUENT CONTINUOUS COATING OF WHITE OR LIGHT COLORED COVER COAT ENAMEL OF SUCH THICKNESS THAT THE TOTAL THICKNESS OF ALL SAID COATS AFTER FIRING IS SUBSTANTIALLY .003 TO .010 INCH, DRYING, AND FIRING SUCH COATS SIMULTANEOUSLY AT THE FIRING TEMPERATURE OF THE COVER COAT, THE FIRING TEMPERATURE OF THE GROUND COAT BEING NOT HIGHER THAN THE FIRING TEMPERATURE OF THE COVER COAT.
References Cited (Backward Citations)
US200626A
Cited
US2294914A
Cited
US2021819A
Cited
US2021820A
Cited
US1893500A
Cited
US2019676A
Cited
US2053244A
Cited
US2135544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |