Patent US3773704A successfully refreshed from Google Patents.
US3773704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble protective coating
Assignee: Tektronix Inc
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Filing: 1971-11-08
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Granted: 1973-11-20
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Expires: 1991-11-08
Abstract
Abstract The present invention relates to a protective coating for application onto selected areas of a member to prevent another material from adhering thereto when this other material is applied onto selected areas of the member; whereafter the protective coating is removed via water due to its water soluble characteristics.
Inventors
- 👤 R Hall
- 👤 J Mumm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:55
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/224; C; C09; C09D; C09D5/00; C09D5/008; H; H05; H05K; H05K3/00; H05K3/0073; H05K3/0076; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0166; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/0209; H05K2203/00; H05K2203/07; H05K2203/0756; H05K2203/0769; H05K2203/0779; H05K2203/0786; H05K3/30; H05K3/32; H05K3/34; H05K3/3452
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
14 words
A masking composition according to claim 1 wherein said silica compound is diatomaceous earth.
Claim 2
Dependent Claim
20 words
A masking composition according to claim 1 wherein up to 1.5 percent by weight of a nonionic surfactant is added.
Claim 3
Dependent Claim
20 words
A masking composition according to claim 1 wherein a trace of rhodamine pink sulfa dye is added to said composition.
Claim 4
Dependent Claim
55 words
A masking composition comprising 90-95 percent by weight of methylene chloride, 0.4-1.5 percent by weight of monoethanolamine, 3-5 percent by weight of diatomaceous earth having a particle size of about 1 micron and 0.7-0.9 percent by weight of polyethylene oxide homopolymer having a molecular weight of 100,000 to 5,000,000 and a viscosity of 225-4,000 cps.
Claim 5
Dependent Claim
58 words
A masking composition for use to mask selected areas of a member to prevent a covering material from adhering thereonto that comprises: % by weight Methylene chloride 95.10 Monoethanolamine 0.46 Diatomaceous earth, particle size of about 1 micron 3.71 Polyethylene oxide homopolymer having a molecular weight of 100, 000 to 5,000,000 and a viscosity of 225-4,000 cps 0.73
Claim 6
Dependent Claim
20 words
A masking composition according to claim 6 wherein a trace of rhodamine pink sulfa dye is added to said composition.
Claim 7
Dependent Claim
58 words
A masking composition for use to mask selected areas of a member to prevent a covering material from adhering thereonto that comprises: % by weight Methylene chloride 94.00 Monoethanolamine 1.41 Diatomaceous earth, particle size of about 1 micron 3.76 Polyethylene oxide homopolymer having a molecular weight of 100, 000 to 5,000,000 and a viscosity of 225-4,000 cps 0.83
Claim 8
Dependent Claim
61 words
A masking composition for use to mask selected areas of a member to prevent a covering material from adhering thereonto that comprises: % by weight Methylene chloride 93.41 Monoethanolamine 1.40 Diatomaceous earth, particle size of about 1 micron 3.73 Polyethylene oxide homopolymer having a molecular weight of 100, 000 to 5,000,000 and a viscosity of 225-4,000 cps 0.73 Nonionic surfactant 0.73
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |