Patent US3675015A successfully refreshed from Google Patents.
US3675015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abhesive pattern detector system
Assignee: Weyerhaeuser Co
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Filing: 1969-09-02
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Granted: 1972-07-04
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Expires: 1989-09-02
Abstract
Abstract A system for detecting the location and uniformity of a coating on a substrate is provided. The process comprises the steps of adding a fluorescent dye material to the coating material, coating the substrate with the fluorescent dye-containing coating material, and viewing the pattern obtained thereby under an ultraviolet light source. A gable-top container employing a nonheat sealing coating containing a fluorescent dye on a portion thereof is described. The fluorescent dye is used to aid in evaluating the location and uniformity of the coating.
Inventors
- 👤 Thomas E Geib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:43
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/8803; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
46 words
The process according to claim 1 wherein gable top liquid containers are fabricated from the blanks, and the abhesive overlays are inwardly spaced from pouring edges of the pouring spouts of the same, as well as from fold lines of the spouts transverse said pouring edges.
Claim 2
Dependent Claim
32 words
The process according to claim 1 wherein the agent is an organic dye which emits visible light under the influence of ultraviolet light irradiated at wavelengths between 2,500 angstroms and 4,500 angstroms.
Claim 3
Dependent Claim
18 words
The process according to claim 1 wherein the blanks have a polyethylene resin coating on both sides thereof.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |