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Numéro de publicationUS3773684 A
Type de publicationOctroi
Date de publication20 nov. 1973
Date de dépôt3 mars 1970
Date de priorité29 juin 1964
Numéro de publicationUS 3773684 A, US 3773684A, US-A-3773684, US3773684 A, US3773684A
InventeursMarks A
Cessionnaire d'origineMarks A
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
Dipolar electro-optic compositions and method of preparation
US 3773684 A
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Description  (Le texte OCR peut contenir des erreurs.)

nited States Patent 1191 Marks [45] Nov. 20, 1973 [5 BIPOLAR ELECTRO-OPTIC 3,241,948 3/1966 Clarborne et a1. 75 .5 B COMPOSITIONS AND METHOD 01 3,367,766 2/1968 Harrington et al.... 29/192 2,456,313 12/1948 Pratt 106/290 PREPARATION 3,007,160 10/1961 l-lalpem 343/18 [76] Inventor: Alvin M, Marks, 153-16 10th Ave 3,171,106 2/1965 Lemmond 340 174.1 whitestone, N Y 3,213,027 10/1965 Fatuzzo et a1. 252/63.2 3,513,449 5/1970 Young 340/173 [22] Filed: Mar. 3, 1970 2 l N 16 185 OTHER PUBLICATIONS App o" Powder Metallurgy, Goetzel, Vol. 1, lnterscience Pub- Related US. Application Data lishers, Inc., N.Y. pp. 9297 copy in library (1949). [63] Continuation-in-part of Ser. No. 378,836, June 29,

964, Pal 3,512,876 Primary ExaminerJohn D. Welsh AttorneyPhilip D. Amins [52] U.S. Cl. 252/309, 348/18, 106/288 B, 148/16, 252/300, 350/267 [51] Int. Cl B01j 13/00 [57] ABSTRACT [58] Field of Search 252/63.5, 63, 309; Methods and apparatus incorporating Suspensions of 343/18 A; 29/192 R; 75/.5; l48/1.6; 350/267 assymetric minute dipolar particles for thecontrol of electromagnetic radiation. The physical electrical and [56] References Cited optica1 properties of the dipolar particles and their UNITED STATES PATENTS suspending medium are specified in conjunction with apparatus employing them. 2,543,793 3/1951 Marks 350/267 3,151,971 10/1964 Clough 75/.5 B 17 Claims, 69 Drawing Figures PATENTEDHUYZO 1975 sum cu or 9 PAIENIEUnmo I975 v 3.773.684 SHEET NM 29 L/6 7 FIG. 43

INVENTOR. 2' 41/5 ,44 w/v M Mazes Fl G. 42 m 424M161 PATENTEU I975 SHEET 160! 29 3.773.684

FEG. 45 w T rraleA a V PATENIED Hm 20 mm SHEET 180F 29 VARIOUS CROSS SECTIONAL AREAS FOR HALF-WAVE DIPOLE Aa+Ab ZOEbMw mmOmo w C. 4mm

RATIO OF RADIATION RESISTANCE TO ABSORPTION RESISTANCE SIM W W mm VM W m M wf M/ C Q PAIENTED IIIIIZO I873 CURVES OF CONSTANT MINIMUM TRANSMISSION RELATIVE TRANSMITTANC E ELECTRIC DICHROIC RATIO I'o 2b 3b MAXIMUM TRANSMITTANCE vs.

ELECTRODICHROIC RATIO FOR CONSTANT MINIMUM TRANSMITTANCE OF 0.0I%, O. I% AND I% lSUF 29 Z CELL CONTAINING A CHROMIUM DIPOLE SUSPENSION VOLTAGE TRACE IKV/ DIV.

TIME (milhseconds) Z CELL CONTAINING A CHROMIUM DIPOLE SUSPENSION 8 VOLTAGE TRACE lKV/DIV TIME (mllllseconds)

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Classifications
Classification aux États-Unis252/583, 516/33, 359/296, 342/6, 342/2
Classification internationaleG02F1/17, G02F1/01
Classification coopérativeG02F1/172
Classification européenneG02F1/17A