US3387237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave window
Assignee: Varian Medical Systems Inc
•
Filing: 1965-12-27
•
Granted: 1968-06-04
•
Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Edward J Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:02
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A MICROWAVE WINDOW ASSEMBLY INCLUDING, MEANS FORMING A WAVE PERMEABLE WINDOW MEMBER FOR GAS-TIGHT PARTITIONING A WAVE-SUPPORTING STRUCTURE, MEANS FORMING A PAIR OF APERTURED METALLIC FRAME MEMBERS SEALED IN A GAS-TIGHT MANNER TO THE MARGIN OF SAID WINDOW MEMBER AND SANDWICHING SAID WAVE PERMEABLE MEMBER THEREBETWEEN, SAID APERTURES IN SAID FRAME MEMBERS DEFINING A PAIR OF IRIS OPENINGS IN SAID FRAME MEMBERS, ONE OF SAID IRIS OPENINGS BEING SMALLER THAN THE OTHER FOR CONCENTRATING THE ELECTRIC FIELDS OF THE WAVE ENERGY ON THAT SIDE OF SAID WINDOW MEMBER, AND A LIP PORTION OF SAID FRAME MEMBER WHICH DEFINES SAID SMALLER IRIS BEING YIELDABLE AND MADE OF A MORE DUCTILE MATERIAL THAN ITS ADJOINING FRAME PORTION, WHEREBY THERMALLY PRODUCED STRESSES IN SAID WINDOW MEMBER ARE REDUCED IN USE.
Claim 2
Dependent Claim
127 words
A MICROWAVE WINDOW ASSEMBLY INCLUDING, MEANS FORMING A WAVE PERMEABLE WINDOW MEMBER FOR GAS-TIGHT PARTITIONING A WAVE-SUPPORTING STRUCTURE, MEANS FORMING A PAIR OF APERTURED METALLIC FRAME MEMBERS SEALED IN A GAS-TIGHT MANNER TO THE MARGIN OF SAID WINDOW MEMBER AND SANDWICHING SAID WAVE PERMEABLE MEMBER THEREBETWEEN, SAID APERTURES IN SAID FRAME MEMBERS DEFINING A PAIR OF IRIS OPENINGS IN SAID FRAME MEMBERS, ONE OF SAID IRIS OPENINGS BEING SMALLER THAN THE OTHER FOR CONCENTRATING THE ELECTRIC FIELDS OF THE WAVE ENERGY ON THAT SIDE OF SAID WINDOW MEMBER, AND A LIP PORTION OF SAID FRAME MEMBER WHICH DEFINES SAID SMALLER IRIS BEING YIELDABLE AND MADE OF A MORE DUCTILE MATERIAL THAN ITS ADJOINING FRAME PORTION, WHEREBY THERMALLY PRODUCED STRESSES IN SAID WINDOW MEMBER ARE REDUCED IN USE.
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) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |