Patent US3190283A successfully refreshed from Google Patents.
Patent US4333908A successfully refreshed from Google Patents.
US4333908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kit for determining silica-alumina catalyst in fuel oil
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1980-12-29
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Granted: 1982-06-08
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Expires: 2000-12-29
Abstract
Abstract An analysis kit for fuel oil to determine its silica-alumina catalyst component content, comprises a plurality of syringes for sampling fuel oil, sample containers for holding the sampled oil, an organic solvent for dissolving the oil in one of the containers, a filter for the solution of the sample in the organic solvent, a reagent for dissolving a catalyst component in the filtration residue formed by the filter, a measuring cylinder to contain the solution formed by the reagent, purified water for diluting the solution in the cylinder to a predetermined volume, color-producing reagents to be added to the solution adjusted with the purified water, a unit for comparing the color developed by the color-producing reagents with colors of known standards, and a portable box accommodating all of the above-mentioned items and supplies.
Inventors
- 👤 Hiroya Maki
- 👤 Taketoshi Furusawa
- 👤 Takeo Takaishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:07
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26; G01N33/28; G01N33/2835; B; B01; B01L; B01L1/00; B01L1/52
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
An analytical kit for fuel oil to determine a silica-alumina catalyst component contained therein, which comprises a plurality of syringes for sampling fuel oil, sample containers for holding the sampled oil, an organic solvent for dissolving said oil in one of said containers, filter means for the solution of said oil in said organic solvent, a reagent for dissolving a catalyst component in the filtration residue formed by said filter means, a measuring cylinder to contain the solution formed by said reagent, purified water for diluting said solution in said cylinder to a predetermined volume, color-producing reagents to be added to said solution adjusted with said purified water, means for comparing the color developed by said color-producing reagents with colors of known standards, and a portable box accommodating all of said means and supplies.
Claim 2
Dependent Claim
134 words
An analytical kit for fuel oil to determine a silica-alumina catalyst component contained therein, which comprises a plurality of syringes for sampling fuel oil, sample containers for holding the sampled oil, an organic solvent for dissolving said oil in one of said containers, filter means for the solution of said oil in said organic solvent, a reagent for dissolving a catalyst component in the filtration residue formed by said filter means, a measuring cylinder to contain the solution formed by said reagent, purified water for diluting said solution in said cylinder to a predetermined volume, color-producing reagents to be added to said solution adjusted with said purified water, means for comparing the color developed by said color-producing reagents with colors of known standards, and a portable box accommodating all of said means and supplies.
Claim 3
Dependent Claim
31 words
An analytical kit according to claim 1, wherein said means for comparing the color developed by said color-producing reagents with colors of known standards is a set of standard color solutions.
Claim 4
Dependent Claim
29 words
An analytical kit according to claim 1, wherein said means for comparing the color developed by said color-producing reagents with colors of known standards is a color comparison unit.
Claim 5
Dependent Claim
37 words
An analytical kit according to claim 2 or 3 wherein: the catalyst dissolving reagent is a hydrofluoric acid solution; and the color-producing reagents include ammonium molybdate solution, an HF-shielding reagent, and interfering-ion-shielding reagent and a coloring-reducing agent.
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) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |