Coating processes – Electrical product produced – Electron emissive or suppressive
Patent
1981-03-18
1982-11-16
Smith, John D.
Coating processes
Electrical product produced
Electron emissive or suppressive
4271261, 427247, 4273722, 252521, B05D 512
Patent
active
043594891
ABSTRACT:
A method for fabricating a homogenous and uniformily sized mixture of alkaline earth metal carbonates found to be especially useful as an emission type coating material for application to a cathodic element of a thermionic vacuum tube.
REFERENCES:
patent: 1842161 (1932-01-01), Fredenburgh
patent: 2545695 (1951-03-01), Hagelston et al.
patent: 2985548 (1961-05-01), Blickwedel et al.
patent: 4273683 (1981-06-01), Kawamura
Doyle et al., Chem. Abstracts, vol. 69, 2217z, 1968.
Bentley et al., Chem. Abstracts, vol. 75, 87977u, 1971.
Farbwerke Hoechst, Chem. Abstracts, vol. 54, 4056d.
Bueker Richard
O'Brien William J.
Singer Donald J.
Smith John D.
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