US3796554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding gas
Assignee: Individual
•
Filing: 1972-04-19
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Granted: 1974-03-12
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Expires: 1992-04-19
Abstract
Abstract A welding gas composition having primary gas components which remain at a substantially uniformly high concentration as the gas is withdrawn from the cylinder and which also remain below the explosive limit, contains 1-35 molar percent of acetylene; 23-90 molar percent of propane, and/or propylene and/or cyclopropane, 8-75 molar percent of methylacetylene and/or propadiene, and 1-20 molar percent of paraffinic and/or olefinic C4-hydrocarbons.
Inventors
- 👤 H Meinass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:33
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/0002; C; C10; C10L; C10L3/00; C10L3/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
64 words
A fuel gas as defined by claim 1, containing 5-10 percent of acetylene, 20-30 percent of a member selected from the group consisting of propane, propylene, cyclopropane, and mixtures thereof; 50-60 percent of a member selected from the group consisting of methylacetylene, propadiene, and mixtures thereof; and 5-15 molar percent of a member selected from the group consisting of n-butane, isobutane, 1-butene, isobutene, 1,3-butadien.
Claim 2
Dependent Claim
39 words
A fuel gas as defined by claim 1 wherein the molar percent of the sum of acetylene, propadiene and methylacetylene is 8-75 percent, and the sum of propane, propylene, cyclopropane, n-butane, isobutane, 1-butene, isobutene, and 1,3-butadiene is 25-65 percent.
Claim 3
Dependent Claim
39 words
A fuel gas as defined by claim 2 wherein the molar percent of the sum of acetylene, propadiene and methylacetylene is 60-70 percent, and the sum of propane, propylene, cyclopropane, n-butane, isobutane, 1-butene, isobutene, and 1,3-butadiene is 30-40 percent.
Claim 4
Dependent Claim
24 words
A vessel under a pressure of 85-170 psi at 20* C containing in mainly the liquid form fuel gas as defined by claim 1.
Claim 5
Dependent Claim
23 words
A vessel under a pressure of 85-170 psi at 20*C containing in mainly the liquid form fuel gas as defined by claim 2.
Claim 6
Dependent Claim
23 words
A vessel under a pressure of 85-170 psi at 20*C containing in mainly the liquid form fuel gas as defined by claim 3.
Claim 7
Dependent Claim
23 words
A vessel under a pressure of 85-170 psi at 20*C containing in mainly the liquid form fuel gas as defined by claim 4.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |