Patent US4200670A successfully refreshed from Google Patents.
US4200670A
Expired / Lapsed
US
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Stacking glass sheets
Assignee: Pilkington North America Inc
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Filing: 1977-09-21
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Granted: 1980-04-29
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Expires: 1997-09-21
Abstract
Abstract This application describes a method of treating glass sheets to be stacked, by applying water, a stain inhibiting material such as ammonium chloride, and dry particles of a mechanical separator such as wood flour, to such sheets in a plurality of sequential steps; together with articles resulting from that method.
Inventors
- 👤 Eberhard R. Albach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:53
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; B; B65; B65G; B65G49/00; B65G49/05; B65G49/06; B65G49/068; B65G49/069; C03C2217/00; C03C2217/20; C03C2217/28; C03C2217/284; C03C2217/286; C03C2218/00; C03C2218/10; C03C2218/11
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
60 words
A method of treating a glass sheet for stacking in face-to-face relation with other glass sheets, consisting essentially of applying atomized water, a stain inhibitor, and dry particles of a mechanical separator to a surface of said sheet in a plurality of sequential steps that fuse said stain inhibitor and said mechanical separator to said surface through a water bond.
Claim 2
Independent Claim
60 words
A method of treating a glass sheet for stacking in face-to-face relation with other glass sheets, consisting essentially of applying atomized water, a stain inhibitor, and dry particles of a mechanical separator to a surface of said sheet in a plurality of sequential steps that fuse said stain inhibitor and said mechanical separator to said surface through a water bond.
Claim 3
Dependent Claim
44 words
A method as claimed in claim 1, in which said water and said stain inhibitor are applied as an atomized aqueous solution of said stain inhibitor to wet said surface, and said dry particles of said mechanical separator are dusted onto said wet surface.
Claim 4
Dependent Claim
36 words
A method as claimed in claim 1, in which said stain inhibitor and said mechanical separator are applied in dry form, and said water is applied thereto to wet and bond the same to said surface.
Claim 5
Dependent Claim
46 words
A method as claimed in claim 1, in which said water is applied by wetting said surface by contact with a fog produced by hydraulic atomization of said water, and said stain inhibitor and said mechanical separator are applied in dry form to said wet surface.
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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) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |