US4027070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel plate for preparing cans by ironing
Assignee: Nippon Steel Corp
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Filing: 1975-03-05
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Granted: 1977-05-31
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Expires: 1995-03-05
Abstract
Abstract A steel plate for preparing cans by ironing having on its surface a composite oil coating which comprises a base oil and one or more, each amounting to 3 to 50 parts, selective from the group comprising of polybutene, polypropylene, polyethylene and ethyl or methyl polymethacrylate, the average molecular weight for each being in the range 500 to 30,000.
Inventors
- 👤 Hidejiro Asano
- 👤 Shigeyoshi Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:54
CPC Classifications
C; C10; C10M; C10M111/00; C10M111/04; B; B21; B21D; B21D22/00; B21D22/20; B21D22/201; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/18; C10M2207/28; C10M2207/287; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31714; Y10T428/31844
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
90 words
A steel plate for preparing cans by ironing having on its surface a composite oil coating in an amount effective to avoid scratching or gashing of said steel plate surface consisting essentially of mineral oil and 3 to 50 parts of polyethylene having an average molecular weight from 500 to 30,000 and wherein the steel plate has on its surface under said composite oil layer, a layer of 0.2 to 10 mg/dm .spsb.2 thickness of a substance selected from a group consisting of zinc phosphate, manganese phosphate, and iron phosphate.
Claim 2
Dependent Claim
90 words
A steel plate for preparing cans by ironing having on its surface a composite oil coating in an amount effective to avoid scratching or gashing of said steel plate surface consisting essentially of mineral oil and 3 to 50 parts of polyethylene having an average molecular weight from 500 to 30,000 and wherein the steel plate has on its surface under said composite oil layer, a layer of 0.2 to 10 mg/dm .spsb.2 thickness of a substance selected from a group consisting of zinc phosphate, manganese phosphate, and iron phosphate.
Claim 3
Dependent Claim
54 words
A steel plate for preparing cans by ironing having on its surface a composite oil coating in an amount effective to avoid scratching or gashing of said steel plate surface consisting essentially of mineral oil and 3 to 50 parts of ethyl or methyl polymethacrylate having an average molecular weight from 500 to 30,000.
Claim 4
Dependent Claim
54 words
A steel plate for preparing cans by ironing having on its surface a composite oil coating in an amount effective to avoid scratching or gashing of said steel plate surface consisting essentially of mineral oil and 3 to 50 parts of ethyl or methyl polymethacrylate having an average molecular weight from 500 to 30,000.
Claim 5
Dependent Claim
93 words
A steel plate for preparing cans by ironing having on its surface a composite oil coating in an amount effective to avoid scratching or gashing of said steel plate surface consisting essentially of mineral oil and 3 to 50 parts of ethyl or methyl polymethacrylate having an average molecular weight from 500 to 30,000, and wherein the steel plate has on its surface under said composite oil layer, a layer of 0.2 to 10 mg/dm .spsb.2 thickness of a substance selected from a group consisting of zinc phosphate, manganese phosphate, and iron phosphate.
Claim 6
Dependent Claim
93 words
A steel plate for preparing cans by ironing having on its surface a composite oil coating in an amount effective to avoid scratching or gashing of said steel plate surface consisting essentially of mineral oil and 3 to 50 parts of ethyl or methyl polymethacrylate having an average molecular weight from 500 to 30,000, and wherein the steel plate has on its surface under said composite oil layer, a layer of 0.2 to 10 mg/dm .spsb.2 thickness of a substance selected from a group consisting of zinc phosphate, manganese phosphate, and iron phosphate.
Claim 7
Dependent Claim
79 words
A steel plate for preparing cans by ironing having on its surface a composite oil coating in an amount effective to avoid scratching or gashing of said steel plate surface consisting essentially of mineral oil and 3 to 50 parts of ethyl or methyl polymethacrylate having an average molecular weight from 500 to 30,000, and wherein the composite oil coating further comprises 2 to 20% of a branched chain monocarboxylic acid having 10 to 18 carbon atoms per molecule.
Claim 8
Dependent Claim
79 words
A steel plate for preparing cans by ironing having on its surface a composite oil coating in an amount effective to avoid scratching or gashing of said steel plate surface consisting essentially of mineral oil and 3 to 50 parts of ethyl or methyl polymethacrylate having an average molecular weight from 500 to 30,000, and wherein the composite oil coating further comprises 2 to 20% of a branched chain monocarboxylic acid having 10 to 18 carbon atoms per molecule.
Claim 9
Dependent Claim
76 words
A steel plate for preparing cans by ironing having on its surface a composite oil coating in an amount effective to avoid scratching or gashing of said steel plate surface consisting essentially of mineral oil and 3 to 50 parts of polyethylene having an average molecular weight from 500 to 30,000, and wherein the composite oil coating further comprises 2 to 20% of a branched chain monocarboxylic acid having 10 to 18 carbon atoms per molecule.
Claim 10
Dependent Claim
76 words
A steel plate for preparing cans by ironing having on its surface a composite oil coating in an amount effective to avoid scratching or gashing of said steel plate surface consisting essentially of mineral oil and 3 to 50 parts of polyethylene having an average molecular weight from 500 to 30,000, and wherein the composite oil coating further comprises 2 to 20% of a branched chain monocarboxylic acid having 10 to 18 carbon atoms per molecule.
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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) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |