Patent US3337372A successfully refreshed from Google Patents.
US3337372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving properties of zirconium metal
Assignee: Individual
•
Filing: 1963-11-06
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Granted: 1967-08-22
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Expires: 1983-11-06
Abstract
No abstract record available.
Inventors
- 👤 Robert E Reed-Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:15
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/16; C22F1/18; C22F1/186; C22C; C22C16/00; C22F1/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS OF IMPROVING PROPERTIES OF ZIRCONIUM AND ZIROCNUIUM ALLOYS WHEREIN THE BASAL PLANES OF THE GRAINS ARE GENERALLY PARALLEL TO ONE DIRECTION COMPRISING THE STEPS OF COOLING THE METAL TO A LOW TEMPERATURE OF ABOUT THAT OF LIQUID NITROGEN AND PRESTRAINING THE METAL AT SAID LOW TEMPERATURE IN A DIRECTION TRANSVERSE TO SAID ONE DIRECTION.
Claim 2
Dependent Claim
56 words
A PROCESS OF IMPROVING PROPERTIES OF ZIRCONIUM AND ZIROCNUIUM ALLOYS WHEREIN THE BASAL PLANES OF THE GRAINS ARE GENERALLY PARALLEL TO ONE DIRECTION COMPRISING THE STEPS OF COOLING THE METAL TO A LOW TEMPERATURE OF ABOUT THAT OF LIQUID NITROGEN AND PRESTRAINING THE METAL AT SAID LOW TEMPERATURE IN A DIRECTION TRANSVERSE TO SAID ONE DIRECTION.
References Cited (Backward Citations)
US3149008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |