Patent US3215574A successfully refreshed from Google Patents.
US3215574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making thin flexible plasticsealed printed circuits
Assignee: Raytheon Co
•
Filing: 1963-03-25
•
Granted: 1965-11-02
•
Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Robert W Korb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/22; H05K3/28; H05K3/281; B; B29; B29C; B29C70/00; B29C70/58; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/034; H05K1/0353; H05K1/036; H05K1/0366; H05K1/0393; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0129; H05K2201/0137; H05K2201/015; H05K2203/00; H05K2203/03; H05K2203/0315; H05K3/38; H05K3/382; H05K3/385; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A METHOD OF MAKING THIN, FLEXIBLE PLASTIC-SEALED PRINTING CIRCUITS COMPRISING: (A) BONDING A LAYER OF RESINOUS COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPENE TO A LAYER OF GLASS CLOTH IMPREGNATED WITH A RESINOUS POLYMER OF OF POLYTETRAFLUOROETHYLENE AT A TEMPERATURE OF 550* FAHRENHEIT AND A PRESSURE OF 20 POUNDS PER SQUARE INCH TO PRODUCE A DIMENSIONALLY STABLE LAMINATED BASE; (B) BONDING A LAYER OF OXIDE-COATED COPPER TO SAID LAYER OF RESINOUS COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPENE AT A TEMPERATURE OF 550* FAHRENHEIT AND A PRESSURE OF 20 POUNDS PER SQUARE INCH; (C) ETCHING SAID COPPER TO FORM A PATTERN OF ELECTRICAL CONDUCTORS; (D) FUSING A COVER LAYER OF A RESINOUS COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPENE TO SAID LAMINATED BASE OVER SAID PATTERN OF ELECTRICAL CONDUCTORS AT A TEMPERATURE OF 550* FAHRENHEIT AND A PRESSURE OF 5 POUNDS PER SQUARE INCH; (E) AND PEELING SAID LAYER OF GLASS CLOTH AWAY FROM SAID FUSED LAYERS OF A RESINOUS COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPENE HAVING SAID PATTERN OF ELECTRICAL CONDUCTORS SEALED THEREBETWEEN.
Claim 2
Independent Claim
167 words
A METHOD OF MAKING THIN, FLEXIBLE PLASTIC-SEALED PRINTING CIRCUITS COMPRISING: (A) BONDING A LAYER OF RESINOUS COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPENE TO A LAYER OF GLASS CLOTH IMPREGNATED WITH A RESINOUS POLYMER OF OF POLYTETRAFLUOROETHYLENE AT A TEMPERATURE OF 550* FAHRENHEIT AND A PRESSURE OF 20 POUNDS PER SQUARE INCH TO PRODUCE A DIMENSIONALLY STABLE LAMINATED BASE; (B) BONDING A LAYER OF OXIDE-COATED COPPER TO SAID LAYER OF RESINOUS COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPENE AT A TEMPERATURE OF 550* FAHRENHEIT AND A PRESSURE OF 20 POUNDS PER SQUARE INCH; (C) ETCHING SAID COPPER TO FORM A PATTERN OF ELECTRICAL CONDUCTORS; (D) FUSING A COVER LAYER OF A RESINOUS COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPENE TO SAID LAMINATED BASE OVER SAID PATTERN OF ELECTRICAL CONDUCTORS AT A TEMPERATURE OF 550* FAHRENHEIT AND A PRESSURE OF 5 POUNDS PER SQUARE INCH; (E) AND PEELING SAID LAYER OF GLASS CLOTH AWAY FROM SAID FUSED LAYERS OF A RESINOUS COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPENE HAVING SAID PATTERN OF ELECTRICAL CONDUCTORS SEALED THEREBETWEEN.
References Cited (Backward Citations)
US3086071A
Cited
US3135823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |