US3108013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of chromizing
Assignee: Pfaudler Permutit Inc
•
Filing: 1960-01-28
•
Granted: 1963-10-22
•
Expires: 1980-01-28
Abstract
No abstract record available.
Inventors
- 👤 Chao Pao Jen
- 👤 Gordon P K Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:55
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/52; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854; Y10T428/12861
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE PROCESS OF COATING A FERROUS METAL OBJECT COMPRISING THE STEPS OF HEATING SAID OBJECT IN A REDUCING ATMOSPHERE IN CONTACT WITH A VOLATILE COMPOUND OF CHROMIUM AND A VOLATILE REACTIVE COMPOUND OF TITANIUM, SAID VOLATILE REACTIVE COMPOUND OF TITANIUM BEING PRESENT IN A QUANTITY SUFFICIENT TO COMBINE WITHT EH CARBON IN THE SURFACE LAYER OF SAID OBJECT AND TO LEAVE AN EXCESS OF AT LEAST 2.0%.
Claim 2
Dependent Claim
67 words
THE PROCESS OF COATING A FERROUS METAL OBJECT COMPRISING THE STEPS OF HEATING SAID OBJECT IN A REDUCING ATMOSPHERE IN CONTACT WITH A VOLATILE COMPOUND OF CHROMIUM AND A VOLATILE REACTIVE COMPOUND OF TITANIUM, SAID VOLATILE REACTIVE COMPOUND OF TITANIUM BEING PRESENT IN A QUANTITY SUFFICIENT TO COMBINE WITHT EH CARBON IN THE SURFACE LAYER OF SAID OBJECT AND TO LEAVE AN EXCESS OF AT LEAST 2.0%.
References Cited (Backward Citations)
US2255482A
Cited
US2399848A
Cited
GB572796A
Cited
US2816048A
Cited
US2811466A
Cited
US2791517A
Cited
US2875090A
Cited
US2851375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |