Patent US2033094A successfully refreshed from Google Patents.
Patent US2800559A successfully refreshed from Google Patents.
US2800559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical semi-conductors comprising organo metallic compounds and process of producing same
Assignee: National Research Development Corp UK
•
Filing: 1953-07-23
•
Granted: 1957-07-23
•
Expires: 1973-07-23
Abstract
No abstract record available.
Inventors
- 👤 Ubbelohde Alfred Rene Joh Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:03
CPC Classifications
C; C07; C07F; C07F1/00; C07F1/04; C07F1/02; H; H10; H10K; H10K85/00; H10K85/30; H10K85/60; H10K85/615
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A SEMI-CONDUCTIVE SUBSTANCE IN THE SOLVENT-FREE SOLID STATE BEING AN ORGANO-METALLIC ADDITION COMPOUND HAVING AS ITS ESENTIAL CONSTITUENTS AT LEAST ONE METALLIC ELEMENT HAVING AN IONIZATION ENERGY NOT GREATER THAN THAT OF CALCIUM AND AT LEAST ONE ORGANIC COMPOUND COMPOSED WHOLLY OF NON-METALLIC ELEMENTS AND HAVING A CONJUGATED SYSTEM OF DOUBLE BONDS AND A SUFFICIENTLY HIGH AFFINITY FOR ELECTRONS TO FORM ADDITION COMPOUNDS WITH SAID METALLIC ELEMENT WITHOUT HOWEVER IMMOBILIZING ANY TRANSFERRED ELECTRONS WITH FORMATION OF AN ION.
Claim 2
Dependent Claim
78 words
A SEMI-CONDUCTIVE SUBSTANCE IN THE SOLVENT-FREE SOLID STATE BEING AN ORGANO-METALLIC ADDITION COMPOUND HAVING AS ITS ESENTIAL CONSTITUENTS AT LEAST ONE METALLIC ELEMENT HAVING AN IONIZATION ENERGY NOT GREATER THAN THAT OF CALCIUM AND AT LEAST ONE ORGANIC COMPOUND COMPOSED WHOLLY OF NON-METALLIC ELEMENTS AND HAVING A CONJUGATED SYSTEM OF DOUBLE BONDS AND A SUFFICIENTLY HIGH AFFINITY FOR ELECTRONS TO FORM ADDITION COMPOUNDS WITH SAID METALLIC ELEMENT WITHOUT HOWEVER IMMOBILIZING ANY TRANSFERRED ELECTRONS WITH FORMATION OF AN ION.
References Cited (Backward Citations)
US2027000A
Cited
US2108277A
Cited
US2239642A
Cited
US2164595A
Cited
US2454082A
Cited
US2451739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |