US2971867A - Coating surfaces - Google Patents

Coating surfaces Download PDF

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Publication number
US2971867A
US2971867A US703922A US70392257A US2971867A US 2971867 A US2971867 A US 2971867A US 703922 A US703922 A US 703922A US 70392257 A US70392257 A US 70392257A US 2971867 A US2971867 A US 2971867A
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United States
Prior art keywords
stripes
transparent
electroconductive
oxide
glass
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Expired - Lifetime
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US703922A
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English (en)
Inventor
William O Lytle
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PPG Industries Inc
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Pittsburgh Plate Glass Co
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Publication date
Application filed by Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Priority to US703922A priority Critical patent/US2971867A/en
Priority to ES0245904A priority patent/ES245904A1/es
Priority to BE573965A priority patent/BE573965A/fr
Application granted granted Critical
Publication of US2971867A publication Critical patent/US2971867A/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/26—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
    • H05B33/28—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode of translucent electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24752—Laterally noncoextensive components

Definitions

  • a TTOKNJ'Y dium, cadmium or mixtures ode ray tube comprises a glass base 10 United States Patent COATING SURFACES William O. Lytle, New Kensington, Pa., assignor to Pittsburgh Plate Glass Company, Allegheny County, Pa., a corporation of Pennsylvania Filed Dec. 19, 1957, Ser. No. 703,922 20 Claims. (Cl. 117-211)
  • This application relates to improvements in coating surfaces, and especially relates to articles provided with transparent electroconductive coatings in the form of spaced stripes.
  • Such articles are useful for many purposes such as where the spaced stripes are used as horizontal and/or vertical deflection plates to provide electron beam deflection control for flat cathode ray tubes such as the type described in the article entitled Wall-Mounted TV Picture Tubes Take Giant Step, beginning at page 7 of the February 1955 issue of Electronics, published by McGraw-Hill, and for transparent panels mounted in front of vehicle glazing closures in which televised pictures, radar screen images or other data are superimposed on the surface of the transparent panel without substantially impairing the transparency through the panel, such as the instrument described in the second paragraph of the article entitled Cockpit Simplicity-Coming, beginning at page 13 of the February 1955 issue of Western Aviation, published by the Occidental Publishing Company, 4328 Sunset Boulevard, Los Angeles 29, California.
  • glass sheets with continuous coatings comprising stripes of colorless, transparent, electroconductive material separated by stripes of a non-electroconductive or highly resistant transparent, colorless material of substantially the same appearance by transmission and reflection as that of the electroconductive stripes.
  • the non-conductive stripes were chosen from materials capable of withstanding voltages in excess of 10,000 volts this annoyance is 'for a 4 inch width.
  • Figure 1 is a plan view of an article coated in accordance to the teaching of the present invention suitable for use as a face plate for a fiat cathode ray tube;
  • Figure 2 is a fragmentary cross sectional view taken along the lines IIIl of Figure 1;
  • Figure 3 is another fragmentary cross-sectional view taken along the lines HIIII of Figure l.
  • Figures 4 and 5 are fragmentary cross-sectional views similar to those of Figures 2 and 3, respectively, of another embodiment of the present invention.
  • the margin 12 serves to attach the base through a marginal spacer to another glass body, such as a flat sheet containing a transparent electroconductive coating and an electroluminescent coating activated by electron impingement. If the electroluminescent coating is transparent, viewing is possible through a data imparting panel.
  • the surface of glass base 10 is partially coated with stripes 14 of a colorless, transparent, electroconductive material such as tin oxide and, additional stripes 16 of a non-conductive, colorless, transparent material such as antimony oxide or titanium oxide having substantially the same appearance by transmission and reflection as that of stripes 14, extending between the stripes 14 in abutting relation to adjacent conductive stripes.
  • a colorless, transparent, electroconductive material such as tin oxide
  • additional stripes 16 of a non-conductive, colorless, transparent material such as antimony oxide or titanium oxide having substantially the same appearance by transmission and reflection as that of stripes 14, extending between the stripes 14 in abutting relation to adjacent conductive stripes.
  • the transparent electroconductive stripes have a surface resfstivity on the order of 30 to 1000 ohms per square, whereas the non-conductive separator stripes 16 have a surface resistivity on the order of to 1000 megohms per unit square and over.
  • the term surface resistivity is a measurement of the resistivity of a square unit area of film covering a portion of the glass sheet surface.
  • bus bars 18 are located in electrical contact therewith. These bus bars are preferably of ceramic silver material and of dimensions A; inch wide by .001 inch thick, although thicknesses up to .005 inch are also desirable. The bus bars are tapered at their extremities to a width of inch.
  • the coated regions terminate inch short of the outer edge of the peripheral margin 12 to provide space /8 inch wide for a frit fillet utilized in attaching the margin 12 to another body of glass or metal /2 inch thick.
  • the conductive stripes In order for the lines of demarcation between the electroconductive and the non-conductive stripes to be invisible to the human eye, it is necessary that the conductive stripes have the same optical transmission and reflection properties as the non-conductive stripes. These properties depend upon the relative thickness, the absorption coeflicient and the index of refraction of the materials used to provide the transparent coating stripes. Tin oxide coatings have an index of 2.0. Antimony oxide has an index slightly in excess of that of tin oxide, ranging between 2.087 and 2.35. The index of refraction of titanium oxide coatings ranges from 2.493 to 2.903. With films consisting essentially of stripes of tin oxide separated by stripes of antimony oxide, the stripes can have substantially the same actual thickness without causing annoyance due to observability of the lines of demarcation between stripes.
  • the surface reflection can be minimized by superimposing a continuous film 22 of a colorless transparent coating material having an index of refraction less than those of the materials comprising the stripes on the coating of alternating stripes.
  • Materials having relatively low refractive indices such as silica and magnesium fluoride are especially suitable for such overcoating. Articles with such overcoating are shown in Figures 4 and 5.
  • Example I The following technique has been employed effectively in producing articles such as shown in Figures 1 through 3.
  • the glass was first cleaned and then immersed in a mixture of carbon tetrachloride, acetone and silicon tetrachloride, such as one containing 94.2 percent by volume CO 4.9 percent by volume CO(CH and 0.9 percent by volume SiCl
  • a mixture of carbon tetrachloride, acetone and silicon tetrachloride such as one containing 94.2 percent by volume CO 4.9 percent by volume CO(CH and 0.9 percent by volume SiCl
  • a silk or metal stencil screen having a desired pattern was aligned with the'glass sheet so that the areas not'to be coated with.
  • electroconductive transparent coat? ing were aligned with the interstices of the screen.
  • a masking paste was applied through the stencil screen.
  • a suitable masking paste so used contains 50 percent by weight of finely divided (2.5 micron average diameter, for example) titanium dioxide in an oil vehicle such as a pine oil mix, for example, one sold commercially as Vitro 56-6. The two ingredients were mixed thoroughly until a smooth masking paste resulted. This paste was then applied through the openings in the stencil screen.
  • the partially masked glass sheet was then heated between 400 F. and the temperatures at which the glass base becomes molten.
  • a preferable temperature was obtained by heating a glass sample 8 inches by 10 inches by Mr inch in a furnace maintained at approximately 1200 F. for four minutes.
  • the heated sample was sprayed with 10 cubic centimeters of a tin oxide film forming composition in a time of from 3 to seconds.
  • the spray composition consisted essentially of anhydrous SnCl dissolved in methanol and distilled watar and containing phenyl hydrazine hydrochloride and a small amount of HP.
  • the film resulting on the unmasked areas was colorless and had a surface resistivity of about 1000 ohms per square.
  • the spray composition was prepared as follows:
  • bus bars were applied to the ends of the conducting stripes by applying a ceramic silver through a silk screen stencil. Care should be taken to insure that the thickness of the bus bars does not exceed .005 inch and preferably that the bus bar thickness is on the order of .001 inch. After screening, the bus bars were dried at 250 F. to The coated stripes of the glass sheet were then masked with a stencil screen having a pattern the reverse of the screen previously used. Thus, the coated stripes and bus bars were covered with masking paste and the uncoated stripes exposed for a second filming.
  • the partially coated glass sheet was then dried as before.
  • the sample was then heated to about 1200 R, which fired the bus bars, removed from the furnace and immediately sprayed with cc. of a solution of SbCl in methanol.
  • This solution preferably contains 5 percent by volume of the antimony pentachloride.
  • the glass sheet was sprayed for from 3 to 5 seconds.
  • the resulting film was clear and colorless and had a surface resistivity in excess of 1000 megohms.
  • the masking paste was washed off by a water rinse.
  • the resulting articles were clear and colorless and did not have observable boundary lines between the high conductive and low conductive areas.
  • Various transparent, electroeouducl vfi, colorless mttal diluted by dissolving it in methyl alco which can be used for oxide films can be utilized in lieu of tin oxide, such as indium oxide, cadmium oxide and mixtures of various metal oxides.
  • tin oxide such as indium oxide, cadmium oxide and mixtures of various metal oxides.
  • thin coatings of metals such as gold and other well known metals which are susceptible of producing thin electroconductive films on glass by vacuum evaporation, cathode sputtering, etc., may also be employed.
  • Non-conductive or high resistance stripes of coating may be composed of antimony oxide, titanium dioxide, poisoned tin oxide such as mixtures of tin oxide and zinc oxide, mixtures of tin oxide with boric oxide, mixtures of tin oxide and cobalt oxide, as well as zinc oxide and silicon dioxide.
  • poisoned tin oxide such as mixtures of tin oxide and zinc oxide, mixtures of tin oxide with boric oxide, mixtures of tin oxide and cobalt oxide, as well as zinc oxide and silicon dioxide.
  • a metal compound in fluid form that is, an atomized solution or the vapor of the compound of metals such as zinc, cadmium, aluminum, indium, thallium, silicon, titanium, germanium, zirconium, tin, lead, thorium, columbium, antimony and tantalum, all of which produce substantially colorless oxide films.
  • any compound of one of the above recited metals which is or can be in fluid form, that is, the vapor or atomized solution of the compound can be used.
  • Both inorganic and organic compounds are suitable for the most part. Examples of some salts of inorganic acids include the chlorides, which are generally most suitable, the iodides, bromides, fluorides, sulfates, nitrates and the like.
  • Organic salts and compounds of the recited metals are generally not as easily available but such as are available can be used provided they are dissolved or diluted if not with water, then with a solvent such as.
  • Such compounds may include open chain compounds such as acetates, lactates, oleates, oxalates, salicylates, stearates, tartrates, and the like, and aromatic compounds such as the benzoates, phenolates, phenolsulfonates, and so forth.
  • Some organic compounds of tin which are particularly suitable are dibutyl tin diacetate, dibutyl tin dilaureate, dibutyl tin oxide, dibutyl diphenyl tin, dilauryl tin dichloride, dibutyl tin dichloride, diphenyl tin dichloride, dibutyl tinethylate, tetraphenyl tin, tetrabutyl tin, dibutyl tin diethylate, and so forth.
  • a solution of the metal compound is atomized and sprayed as a fine mist against the heated glass.
  • the same result is obtained by evaporating the metal compounds, it volatile without the composition, and contacting the surface of the hot glass with the resultant fumes.
  • the metal salt or compound is converted to the corresponding metal oxide which adheres with great avidity and in a very thin uniform layer to the surface of'the glass.
  • Suitable adherent metal oxide films or coatings may also be produced by evaporating the metal oxide adjacent the cool glass surface in a vacuum and condensing the vapor on the glass or by evaporating the metal in a like manner and thereafter heating the metal coated glass in air or in air enriched with oxygen to convert to its oxide.
  • a masking technique especially useful for stripe-coating sheets shaped by pressing to include a flange at their margin for use as a marginal spacer as an integral structural component may involve the use of masking tape rather than stencils,"especially when the sheets are sharply bent.
  • a transparent electroconductive article comprising a transparent base of non-conductive material, spaced stripes of transparent, substantially colorless electroconductive material fixed to the base and stripes of transparent, substantially colorless substantially non-electroconductive material fixed to the base and extending between adjacent stripes of transparent electroconductive material, the improvement comprising stripes of substantially non-conductive material of sufiicient width and thickness to provide a continuous coating of uniform light transmission wherein interfaces between the electroconductive and non-conductive stripes are not noticeable to the naked eye.
  • the transparent electroconductive material comprises a metal oxide taken from the class consisting of tin oxide, indium oxide and cadmium oxide.
  • the transparent substantially non-electroconductive material comprises a metal oxide taken from the class consisting of antimony oxide, titanium dioxide, silicon dioxide, zinc oxide and mixtures of metal oxides taken from the class consisting of tin oxide plus zinc oxide, tin oxide plus boric oxide, tin oxide plus cobalt oxide and tin oxide plus titanium dioxide.
  • the article according to claim 1 including a continuous coating, having an index of refraction less than those of either of the transparent materials comprising the stripes superimposed on the stripes, in permanently bonded relation thereto.
  • a transparent electroconductive article comprising a transparent glass base, spaced stripes of transparent, substantially colorless electroconductive metal oxide fixed to the base, and stripes of transparent, substantially colorless substantially non-electroconductive metal oxide fixed to the base and extending between adjacent stripes of electroconductive metal oxide the improvement comprising stripes of substantially non-conductive metal oxide of sufiicient width and thickness to provide a continuous coating of uniform light transmission wherein interfaces between the electroconductive and non-conductive stripes are not noticeable to the naked eye.
  • a transparent electroconductive article comprising a transparent glass base and a substantially continuous, transparent, substantially colorless coating on the base, said coating comprising alternating stripes of a transparent substantially colorless highly electroconductive material and stripes of a transparent substantially colorless less electronconductive material, the improvement wherein the relatilve thickness of the strips in such that the interfaces between stripes are not noticeable to the naked eye.
  • a transparent electroconductive article as in claim 8 including a continuous coating, having an index of refraction less than those of either of the transparent materials comprising the stripes, superimposed on the stripes in permanently bonded relation thereto.
  • a transparent electroconductive article comprising a glass base, a substantially continuous transparent coating in the form of elon ated transparent, substantially colorless stripes arranged in side by side relation to each other, adjacent stripes being composed of diiferent transparent materials having significantly different electroconductive properties, the improvement wherein the thickness of adjacent stripes is such that they have substantially identical appearance by transmission and reflection, whereby interfaces between adjacent dissimilar stripes are invisible to the naked eye.
  • a transparent electroconductive article comprising a glass base, a substantially continuous transparent, substantially colorless coating in the form of alternate transparent, substantially colorless stripes of tin oxide and a transparent material having significantly less electroconductivity than that of tin oxide, the improvement wherein the thickness of adjacent stripes is such that they have substantially identical appearance by transmission and reflection, whereby interfaces between adjacent dissimilar stripes are invisible to the naked eye.
  • a method of providing on a surface of a transparent base a continuous coating of stripes of alternating materials of significantly different conductivity but of substantially identical appearance by transmission and reflection comprising coating a first transparent material in the form of spaced stripes to a surface to be coated, masking the coated stripes only, applying a second transparent material having significantly difierent electroconductivity from that of the first material to the partially coated transparent base in an amount sutficient to match the appearance of the stripes of the first transparent material by transmission and reflection and removing the masking material.
  • the masking material used comprises a mixture of finely divided titanium dioxide in an oil vehicle.
  • a transparent electroconductive article comprising a transparent base and a substantially continuous transparent, substantially colorless coating on the base, said coating comprising alternating stripes of a highly electroconductive material and stripes of a less electroconductive material, the improvement wherein the relative I thickness of the stripes is such that the interfaces between stripes are not noticeable to the naked eye.

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  • Laminated Bodies (AREA)
  • Surface Treatment Of Glass (AREA)
  • Elimination Of Static Electricity (AREA)
US703922A 1957-12-19 1957-12-19 Coating surfaces Expired - Lifetime US2971867A (en)

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Application Number Priority Date Filing Date Title
US703922A US2971867A (en) 1957-12-19 1957-12-19 Coating surfaces
ES0245904A ES245904A1 (es) 1957-12-19 1958-12-12 Mejoras introducidas en la fabricaion de articulos electroconductores transpaentes
BE573965A BE573965A (fr) 1957-12-19 1958-12-17 Article transparent conducteur de l'electricité

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113039A (en) * 1959-08-05 1963-12-03 Landis & Gyr Ag Method of producing coatings on heatresisting supports
US3202054A (en) * 1959-10-16 1965-08-24 Corning Glass Works Radiation filter with plural iridized metal oxide films
US3288639A (en) * 1962-05-31 1966-11-29 Xerox Corp Method for making a plural layered printed circuit board
US3340006A (en) * 1963-05-01 1967-09-05 Corning Glass Works Method of producing thin flakes of metal oxide
US3436257A (en) * 1964-07-30 1969-04-01 Norma J Vance Metal silicate coating utilizing electrostatic field
US3485664A (en) * 1966-12-14 1969-12-23 Owens Illinois Inc Method for applying electro-conductive pattern on non-conductive surfaces
US3887744A (en) * 1968-10-18 1975-06-03 Sumitomo Chemical Co Coated transparent sheets
US3922386A (en) * 1972-04-12 1975-11-25 Orbaiceta Process for the manufacture of small heat-generating printed circuits
US4157932A (en) * 1976-11-04 1979-06-12 Canon Kabushiki Kaisha Connecting method
EP0003551A1 (fr) * 1978-02-02 1979-08-22 Siemens Aktiengesellschaft Méthode de fabrication de couches électriquement conductrices on non-conductrices améliorant l'adhérence des matériaux luminescents aux supports plans ou courbés dans une direction, pour écrans d'images en couleurs
DE2928256A1 (de) * 1978-07-17 1980-01-31 Rockwell International Corp Verfahren zur ausbildung eines transparenten leitungsmusters
US4187340A (en) * 1973-05-14 1980-02-05 Asahi Glass Company, Ltd. Method of forming patterned transparent electro-conductive film on the substrate of liquid crystal display
US4255474A (en) * 1980-01-04 1981-03-10 Rockwell International Corporation Composite having transparent conductor pattern
US4277517A (en) * 1978-07-17 1981-07-07 Rockwell International Corporation Method of forming transparent conductor pattern
US20030232197A1 (en) * 2002-06-18 2003-12-18 Bernd Disteldorf Method of making vehicle windshield using coating mask
US9674895B1 (en) 2015-12-15 2017-06-06 Cardinal Cg Company Glazing perimeter anticondensation coating production technology
US20170167188A1 (en) * 2015-12-15 2017-06-15 Cardinal Cg Company Glazing perimeter anticondensation coating technology

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864970A (en) * 1955-07-11 1958-12-16 Kaiser Ind Corp Electronic device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864970A (en) * 1955-07-11 1958-12-16 Kaiser Ind Corp Electronic device

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113039A (en) * 1959-08-05 1963-12-03 Landis & Gyr Ag Method of producing coatings on heatresisting supports
US3202054A (en) * 1959-10-16 1965-08-24 Corning Glass Works Radiation filter with plural iridized metal oxide films
US3288639A (en) * 1962-05-31 1966-11-29 Xerox Corp Method for making a plural layered printed circuit board
US3340006A (en) * 1963-05-01 1967-09-05 Corning Glass Works Method of producing thin flakes of metal oxide
US3436257A (en) * 1964-07-30 1969-04-01 Norma J Vance Metal silicate coating utilizing electrostatic field
US3485664A (en) * 1966-12-14 1969-12-23 Owens Illinois Inc Method for applying electro-conductive pattern on non-conductive surfaces
US3887744A (en) * 1968-10-18 1975-06-03 Sumitomo Chemical Co Coated transparent sheets
US3922386A (en) * 1972-04-12 1975-11-25 Orbaiceta Process for the manufacture of small heat-generating printed circuits
US4187340A (en) * 1973-05-14 1980-02-05 Asahi Glass Company, Ltd. Method of forming patterned transparent electro-conductive film on the substrate of liquid crystal display
US4157932A (en) * 1976-11-04 1979-06-12 Canon Kabushiki Kaisha Connecting method
EP0003551A1 (fr) * 1978-02-02 1979-08-22 Siemens Aktiengesellschaft Méthode de fabrication de couches électriquement conductrices on non-conductrices améliorant l'adhérence des matériaux luminescents aux supports plans ou courbés dans une direction, pour écrans d'images en couleurs
DE2928256A1 (de) * 1978-07-17 1980-01-31 Rockwell International Corp Verfahren zur ausbildung eines transparenten leitungsmusters
US4277517A (en) * 1978-07-17 1981-07-07 Rockwell International Corporation Method of forming transparent conductor pattern
US4255474A (en) * 1980-01-04 1981-03-10 Rockwell International Corporation Composite having transparent conductor pattern
US20030232197A1 (en) * 2002-06-18 2003-12-18 Bernd Disteldorf Method of making vehicle windshield using coating mask
US7125462B2 (en) * 2002-06-18 2006-10-24 Centre Luxembourgeois De Recherches Pour Le Verre Et Al Ceramique S.A. (C.R.V.C.) Method of making vehicle windshield using coating mask
US9674895B1 (en) 2015-12-15 2017-06-06 Cardinal Cg Company Glazing perimeter anticondensation coating production technology
US20170167188A1 (en) * 2015-12-15 2017-06-15 Cardinal Cg Company Glazing perimeter anticondensation coating technology
US9810017B2 (en) * 2015-12-15 2017-11-07 Cardinal Cg Company Glazing perimeter anticondensation coating technology

Also Published As

Publication number Publication date
BE573965A (fr) 1959-06-17
ES245904A1 (es) 1959-06-01

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