US3341348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Release surfaces and processes
Assignee: Chromium Corp of America
•
Filing: 1963-12-11
•
Granted: 1967-09-12
•
Expires: 1983-12-11
Abstract
No abstract record available.
Inventors
- 👤 Calvin O Letendre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:06
CPC Classifications
F; F16; F16C; F16C13/00; B; B05; B05D; B05D5/00; B05D5/08; B05D5/083; B05D7/00; B05D7/14; B05D7/16; B29; B29B; B29B7/00; B29B7/30; B29B7/58; B29B7/62; B29C; B29C33/00; B29C33/56; B29C33/60; B29C33/62; B05D2350/00; B05D2350/60; B05D2350/65; B05D5/02; B05D7/146; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/2462; Y10T428/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE PROCESS FOR FORMING, ON A SUBSTRATE, A NOVEL SURFACE HAVING SUPERIOR RELEASE AND ABRASION PROPERTIES WHICH COMPRISES THE STEPS OF FORMING ON SAID SUBSTRATE A UNIFORMLY TEXTURED CHROMIUM SURFACE HAVING A PLURALITY OF SUBSTANTIALLY UNIFORMLY DISTRIBUTED DEPRESSIONS AND PEAKS; APPLYING TO SAID TEXTURED SURFACE A THIN UNIFORM DEPOSIT OF FLUOROCARBON POLYMER; HEATING SAID TEXTURED SURFACE TO A TEMPERATURE ABOVE THE FUSION TEMPERATURE OF SAID FLUOROCARBON POLYMER THEREBY FORMING A CONTINUOUS FILM OF FLUOROCARBON POLYMER ON SAID TEXTURED SURFACE; AND REMOVING SAID FILM FROM SAID PEAKS; THEREBY FORMING
Claim 2
Dependent Claim
88 words
THE PROCESS FOR FORMING, ON A SUBSTRATE, A NOVEL SURFACE HAVING SUPERIOR RELEASE AND ABRASION PROPERTIES WHICH COMPRISES THE STEPS OF FORMING ON SAID SUBSTRATE A UNIFORMLY TEXTURED CHROMIUM SURFACE HAVING A PLURALITY OF SUBSTANTIALLY UNIFORMLY DISTRIBUTED DEPRESSIONS AND PEAKS; APPLYING TO SAID TEXTURED SURFACE A THIN UNIFORM DEPOSIT OF FLUOROCARBON POLYMER; HEATING SAID TEXTURED SURFACE TO A TEMPERATURE ABOVE THE FUSION TEMPERATURE OF SAID FLUOROCARBON POLYMER THEREBY FORMING A CONTINUOUS FILM OF FLUOROCARBON POLYMER ON SAID TEXTURED SURFACE; AND REMOVING SAID FILM FROM SAID PEAKS; THEREBY FORMING
References Cited (Backward Citations)
US2813041A
Cited
GB876209A
Cited
US3054649A
Cited
US3211325A
Cited
US3244556A
Cited
US3207209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |