Patent US4049600A successfully refreshed from Google Patents.
US4049600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weldable corrosion resistant primer material
Assignee: Mortell Co
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Filing: 1975-07-08
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Granted: 1977-09-20
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Expires: 1995-07-08
Abstract
Abstract A weldable, corrosion resistant primer material which is adapted for airless spraying application and which is resistant to mill oil and drawing compounds and is not subject to loss of properties under the influence of phosphating systems utilized in modern automobile manufacturing plants. The welding time of the material may be left open and may be varied to accommodate various assembly operations.
Inventors
- 👤 Kanti D. Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:25
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D167/00; C09D167/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
86 words
A weldable, corrosion preventative primer material comprising: a binding agent and drying time control agent selected from the group consisting of long oil alkyds, medium oil alkyds, short oil alkyds and epoxy esters; between 15 and 39% by weight of a paraffinic oil; between 7.2 and 16.4% by weight of pigment comprising iron oxide; between 1.5 and 2.09% by weight of calcium oxide; between 0.20 and 0.24% by weight of a composition of diethylene glycol and boron trifluoride; an epoxy resin; and a viscosity control agent.
Claim 2
Dependent Claim
86 words
A weldable, corrosion preventative primer material comprising: a binding agent and drying time control agent selected from the group consisting of long oil alkyds, medium oil alkyds, short oil alkyds and epoxy esters; between 15 and 39% by weight of a paraffinic oil; between 7.2 and 16.4% by weight of pigment comprising iron oxide; between 1.5 and 2.09% by weight of calcium oxide; between 0.20 and 0.24% by weight of a composition of diethylene glycol and boron trifluoride; an epoxy resin; and a viscosity control agent.
Claim 3
Dependent Claim
12 words
The primer material of claim 1 which further comprises a filler material.
Claim 4
Dependent Claim
14 words
The primer material of claim 2 wherein said filler material is a fibrous material.
Claim 5
Dependent Claim
12 words
The primer material of claim 3 wherein said fibrous material is asbestos.
Claim 6
Dependent Claim
18 words
The primer material of claim 1 which further comprises between 1.03 and 14.90% by weight of N-alkyl trimethylenediamines.
Claim 7
Dependent Claim
20 words
The primer material of claim 1 which further comprises between 0.20 and 0.52% of a wetting agent comprising petroleum sulfonate.
Claim 8
Dependent Claim
16 words
The primer material of claim 1 wherein said pigment comprising iron oxide comprises red iron oxide.
Claim 9
Dependent Claim
16 words
The primer material of claim 1 wherein said pigment comprising iron oxide comprises black iron oxide.
Claim 10
Dependent Claim
17 words
The primer material of claim 1 wherein said pigment comprising iron oxide also comprises basic lead silicate.
Claim 11
Dependent Claim
13 words
The primer material of claim 1 wherein said epoxy resin comprises 4,4-isopropylenediphenolepichlorohydrin resin.
Claim 12
Dependent Claim
14 words
The primer material of claim 1 wherein said viscosity control agent comprises mineral spirits.
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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) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |