US3079275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray-coating process
Assignee: Inland Steel Co
•
Filing: 1959-10-12
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Granted: 1963-02-26
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Expires: 1979-10-12
Abstract
No abstract record available.
Inventors
- 👤 Michael O Holowaty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:16
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C4/04; C23C4/06; C23C4/08; C23C4/12; C23C4/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A CONTINOUS PROCESS OF SPRAY-COATING A FERROUS METAL BASE WITH A THIN PROTECTIVE METAL WHICH COMPRISES: CONTINUOUSLY SPRAYING A MOLTING PROTECTIVE METAL ON A FERROUS METAL BASE SURFACE WITH THE PROTECTIVE METAL FORMED DISCRETE SPACED DROPLETS ON THE SURFACE OF SAID METAL BASE AND LEAVING EXPOSED A PORTION OF THE SAID METAL SURFACE BETWEEN THE DROPLETS, SAID SPRAYING OPERATION BEING CARRIED OUT IN A NON-OXIDIZING ATMOSPHERE; EXPOSING SAID SPRAY-COATED METAL SURFACE WHILE IN A NONOXIDIZING ATMOSPHERE TO A SOURCE OF HEAT SUFFICIENT TO RAPIDLY MELT SAID SPACED DROPLETS AND HEAT THE EXPOSED METAL SURFACE, THEREBY PERMITTING SAID DROPLETS TO FLOW TOGETHER AND FORMING A PROTECTIVE COATING OVER SAID METAL BASE; AND RAPIDLY QUENCHING SAID HEATED METAL BASE AND PROTECTIVE METAL COATING TO PREVENT FORMATION OF OBJECTIONABLE AMOUNTS OF INTERMETALLIC COMPOUND THEREBETWEEN.
Claim 2
Dependent Claim
131 words
A CONTINOUS PROCESS OF SPRAY-COATING A FERROUS METAL BASE WITH A THIN PROTECTIVE METAL WHICH COMPRISES: CONTINUOUSLY SPRAYING A MOLTING PROTECTIVE METAL ON A FERROUS METAL BASE SURFACE WITH THE PROTECTIVE METAL FORMED DISCRETE SPACED DROPLETS ON THE SURFACE OF SAID METAL BASE AND LEAVING EXPOSED A PORTION OF THE SAID METAL SURFACE BETWEEN THE DROPLETS, SAID SPRAYING OPERATION BEING CARRIED OUT IN A NON-OXIDIZING ATMOSPHERE; EXPOSING SAID SPRAY-COATED METAL SURFACE WHILE IN A NONOXIDIZING ATMOSPHERE TO A SOURCE OF HEAT SUFFICIENT TO RAPIDLY MELT SAID SPACED DROPLETS AND HEAT THE EXPOSED METAL SURFACE, THEREBY PERMITTING SAID DROPLETS TO FLOW TOGETHER AND FORMING A PROTECTIVE COATING OVER SAID METAL BASE; AND RAPIDLY QUENCHING SAID HEATED METAL BASE AND PROTECTIVE METAL COATING TO PREVENT FORMATION OF OBJECTIONABLE AMOUNTS OF INTERMETALLIC COMPOUND THEREBETWEEN.
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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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |