US4130673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of applying tin oxide on glass using butyltin trichloride
Assignee: Arkema Inc
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Filing: 1978-01-27
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Granted: 1978-12-19
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Expires: 1998-01-27
Abstract
Abstract The coefficient of friction of glass is decreased and the scratch resistance is improved by applying finely divided or vaporized butyltin trichloride to the heated glass articles to produce a coating of stannic oxide on the glass. The glass is then coated with a conventional lubricating wax.
Inventors
- 👤 William A. Larkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:16
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/42
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
80 words
A method for reducing the coefficient of friction and susceptibility to scratching exhibited by glass surfaces, the method consisting essentially of the following sequence of operations: (1) Maintaining said glass surface at a temperature of between 450 and 600° C. while applying to said glass surface vaporized or finely divided butyltin trichloride, (2) Maintaining the glass surface at a temperature of 350° C. or below while applying to the glass surface a coating of a natural wax or synthetic polymer.
Claim 2
Independent Claim
80 words
A method for reducing the coefficient of friction and susceptibility to scratching exhibited by glass surfaces, the method consisting essentially of the following sequence of operations: (1) Maintaining said glass surface at a temperature of between 450 and 600° C. while applying to said glass surface vaporized or finely divided butyltin trichloride, (2) Maintaining the glass surface at a temperature of 350° C. or below while applying to the glass surface a coating of a natural wax or synthetic polymer.
Claim 3
Dependent Claim
60 words
A method as described in claim 1 wherein the synthetic polymer is selected from the group consisting of polyethylene, oxidized polyethylene, copolymers of a polyoxyalkylene or etherified polyoxyalkylene and a dialkylpolysiloxane, copolymers of vinyl esters or esters of ethylenically unsaturated carboxylic acid and other ethylenically unsaturated compounds, vinyl alcohol polymers, polyurethanes and maleic anhydride copolymers, polyurethanes and maleic anhydride copolymers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |