US3085912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of permanently marking polytetrafluoroethylene
Assignee: Lockheed Martin Corp
•
Filing: 1960-02-24
•
Granted: 1963-04-16
•
Expires: 1980-02-24
Abstract
No abstract record available.
Inventors
- 👤 Charles L Friese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:24
CPC Classifications
B; B41; B41F; B41F23/00; B41F17/00; B41F17/08; B41F17/10; B41F23/04; B41F23/0403; B41F23/0406; B41F23/0413; B41M; B41M1/00; B41M1/26; B41M1/30; B41M7/00; B41M7/0054; B41M7/0072
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD OF MARKING ARTICLES OF HOMOPOLYMERS AND COPOLYMERS OF TETRAFLUOROETHYLENE COMPRISING THE STEPS OF PRINTING THE SURFACE OF SUCH AN ARTICLE WITH INK IN THE DESIRE PATTERN, SAID INK COMPRISING A PIGMENT ADMIXED WITH PARTICLES OF POLYTELRATUOROETHYLENE, AND IRRADIATING SAID SURFACE WITH INFRARED RADIATION SO AS TO CAUSE SAID INK TO BECOME PERMANENTLY BONDED TO SAID SURFACE.
Claim 2
Independent Claim
58 words
A METHOD OF MARKING ARTICLES OF HOMOPOLYMERS AND COPOLYMERS OF TETRAFLUOROETHYLENE COMPRISING THE STEPS OF PRINTING THE SURFACE OF SUCH AN ARTICLE WITH INK IN THE DESIRE PATTERN, SAID INK COMPRISING A PIGMENT ADMIXED WITH PARTICLES OF POLYTELRATUOROETHYLENE, AND IRRADIATING SAID SURFACE WITH INFRARED RADIATION SO AS TO CAUSE SAID INK TO BECOME PERMANENTLY BONDED TO SAID SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |