US4095006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cadmium sulfide film
Assignee: TOTAL ENERGIE DEVELOPPEMENT
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Filing: 1976-03-26
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Granted: 1978-06-13
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Expires: 1996-03-26
Abstract
Abstract A method of forming a cadmium sulfide film from a solution containing a cadmium salt and a sulfur containing compound comprising inclusion of a chlorine containing compound in the solution utilized to form the cadmium sulfide film.
Inventors
- 👤 John Francis Jordan
- 👤 Curtis Magill Lampkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:51
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; H; H10; H10F; H10F71/00; H10F71/125; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/543
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
97 words
The method of forming a film including cadmium sulfide crystals, comprising the step of spraying a solution comprising a water soluble cadmium salt other than cadmium chloride, a water soluble organic sulfur containing compound capable of reacting with a cadmium salt in the presence of chloride ions to form cadmium sulfide crystals, and a water soluble chlorine containing compound, other than cadmium chloride, which freely disassociates chloride ions in aqueous solution to catalyze a reaction involving said cadmium salt and said sulfur containing compound to form a film of said cadmium sulfide crystals on a heated substrate.
Claim 2
Independent Claim
97 words
The method of forming a film including cadmium sulfide crystals, comprising the step of spraying a solution comprising a water soluble cadmium salt other than cadmium chloride, a water soluble organic sulfur containing compound capable of reacting with a cadmium salt in the presence of chloride ions to form cadmium sulfide crystals, and a water soluble chlorine containing compound, other than cadmium chloride, which freely disassociates chloride ions in aqueous solution to catalyze a reaction involving said cadmium salt and said sulfur containing compound to form a film of said cadmium sulfide crystals on a heated substrate.
Claim 3
Dependent Claim
30 words
The method according to claim 1, wherein cadmium salt is selected from the group consisting of cadmium iodide, cadmium bromide, cadmium acetate, cadmium ammonium chloride, cadmium nitrate, and cadmium sulfate.
Claim 4
Dependent Claim
13 words
The method according to claim 2, wherein the sulfur containing compound is thiourea.
Claim 5
Dependent Claim
26 words
The method according to claim 3, wherein the chlorine containing compound is selected from the group consisting of hydrochloric acid, ammonium chloride, and cadmium ammonium chloride.
Claim 6
Independent Claim
72 words
A method of forming a film including cadmium sulfide crystals, comprising the step of spraying a composition comprising a cadmium salt selected from the group consisting of cadmium iodide, cadmium bromide, cadmium acetate, cadmium nitrate, cadmium sulfate, and cadmium ammonium chloride; thiourea; and a chlorine containing compound selected from the group consisting of hydrochloric acid, ammonium chloride, and cadmium ammonium chloride; in forming a film comprising cadmium sulfide on a heated substrate.
Claim 7
Independent Claim
72 words
A method of forming a film including cadmium sulfide crystals, comprising the step of spraying a composition comprising a cadmium salt selected from the group consisting of cadmium iodide, cadmium bromide, cadmium acetate, cadmium nitrate, cadmium sulfate, and cadmium ammonium chloride; thiourea; and a chlorine containing compound selected from the group consisting of hydrochloric acid, ammonium chloride, and cadmium ammonium chloride; in forming a film comprising cadmium sulfide on a heated substrate.
Claim 8
Independent Claim
79 words
A method of forming a film comprising cadmium sulfide crystals from a sprayed composition of a cadmium salt other than cadmium chloride and a sulfur containing compound, wherein the improvement comprises the step of including in the composition a chlorine containing compound, other than cadmium chloride, which freely disassociates chloride ions in aqueous solution to catalyze a reaction involving said cadmium salt and said sulfur compound to form a film of said cadmium sulfide crystals on a heated substrate.
Claim 9
Independent Claim
79 words
A method of forming a film comprising cadmium sulfide crystals from a sprayed composition of a cadmium salt other than cadmium chloride and a sulfur containing compound, wherein the improvement comprises the step of including in the composition a chlorine containing compound, other than cadmium chloride, which freely disassociates chloride ions in aqueous solution to catalyze a reaction involving said cadmium salt and said sulfur compound to form a film of said cadmium sulfide crystals on a heated substrate.
Claim 10
Dependent Claim
26 words
The method according to claim 6, wherein the chlorine containing compound is selected from the group consisting of hydrochloric acid, ammonium chloride, and cadmium ammonium chloride.
Claim 11
Dependent Claim
87 words
A film of cadmium sulfide crystals formed by use of a composition comprising a water soluble cadmium sald other than cadmium chloride, a water soluble, organic sulfur containing compound capable of reacting with a cadmium salt in the presence of chloride ions to form cadmium sulfide crystals, and a water soluble chlorine containing compound, other than cadmium chloride, which freely disassociates chloride ions in aqueous solution to catalyze a reaction involving said cadmium salt and said sulfur compound when said composition is sprayed onto a heated substrate.
Claim 12
Dependent Claim
87 words
A film of cadmium sulfide crystals formed by use of a composition comprising a water soluble cadmium sald other than cadmium chloride, a water soluble, organic sulfur containing compound capable of reacting with a cadmium salt in the presence of chloride ions to form cadmium sulfide crystals, and a water soluble chlorine containing compound, other than cadmium chloride, which freely disassociates chloride ions in aqueous solution to catalyze a reaction involving said cadmium salt and said sulfur compound when said composition is sprayed onto a heated substrate.
Claim 13
Dependent Claim
31 words
A film as in claim 8, wherein the cadmium salt is selected from the group consisting of cadmium iodide, cadmium bromide, cadmium acetate, cadmium nitrate, cadmium sulfate, and cadmium ammonium chloride.
Claim 14
Dependent Claim
86 words
A composition for forming a film comprised of cadmium sulfide crystals comprising a water soluble cadmium salt other than cadmium chloride, a water soluble, organic sulfur containing compound capable of reacting with a cadmium salt in the presence of chloride ions to form cadmium sulfide crystals, and a water soluble chlorine containing compound, other than cadmium chloride, which freely disassociates chloride ions in aqueous solution to catalyze a reaction involving said cadmium salt and said sulfur compound when said composition is sprayed onto a heated substrate.
Claim 15
Dependent Claim
86 words
A composition for forming a film comprised of cadmium sulfide crystals comprising a water soluble cadmium salt other than cadmium chloride, a water soluble, organic sulfur containing compound capable of reacting with a cadmium salt in the presence of chloride ions to form cadmium sulfide crystals, and a water soluble chlorine containing compound, other than cadmium chloride, which freely disassociates chloride ions in aqueous solution to catalyze a reaction involving said cadmium salt and said sulfur compound when said composition is sprayed onto a heated substrate.
Claim 16
Dependent Claim
31 words
The composition claimed in claim 10, wherein the cadmium salt is selected from the group consisting of cadmium iodide, cadmium bromide, cadmium acetate, cadmium nitrate, cadmium sulfate, and cadmium ammonium chloride.
Claim 17
Dependent Claim
13 words
The composition claimed in claim 11, wherein the sulfur containing compound is thiourea.
Claim 18
Dependent Claim
26 words
The composition claimed in claim 12, wherein the chlorine containing compound is selected from the group consisting of hydrochloric acid, ammonium chloride, and cadmium ammonium chloride.
Claim 19
Dependent Claim
56 words
A film comprised of cadmium sulfide formed by use of a composition comprising: a cadmium salt selected from the group consisting of cadmium iodide, cadmium bromide, cadmium acetate, cadmium nitrate, cadmium sulfate, and cadmium ammonium chloride; thiourea; and a chlorine containing compound selected from the group consisting of hydrochloric acid, ammonium chloride, and cadmium ammonium chloride.
Claim 20
Dependent Claim
56 words
A film comprised of cadmium sulfide formed by use of a composition comprising: a cadmium salt selected from the group consisting of cadmium iodide, cadmium bromide, cadmium acetate, cadmium nitrate, cadmium sulfate, and cadmium ammonium chloride; thiourea; and a chlorine containing compound selected from the group consisting of hydrochloric acid, ammonium chloride, and cadmium ammonium chloride.
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) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |