Patent US3929667A successfully refreshed from Google Patents.
US3929667A
Expired / Lapsed
US
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Immersion oil formulations for use in microscopy and similar fields
Assignee: R P CARGILLE LAB Inc
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Filing: 1974-06-19
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Granted: 1975-12-30
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Expires: 1994-06-19
Abstract
Abstract Immersion oils for microscopy are described which employ a hydrogenated terphenyl formulation in conjunction with a polybutene compound to provide a non-toxic immersion oil with excellent optical properties.
Inventors
- 👤 Arthur N Bautis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:07
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
51 words
AN IMMERSION OIL FOR USE IN THE FIELD OF MICROSCOPY AND RELATED FIELDS THERETO, CONSISTING ESSENTIALLY OF A HYDROGENATED TERPHENYL IN SOLUTION WITH AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYBUTENE DERIVATIVES AND MINERAL OIL TO PROVIDE AN INDEX OF REFRACTION BETWEEN THE RANGE OF 1.5100 AND 1.5240.
Claim 2
Dependent Claim
51 words
AN IMMERSION OIL FOR USE IN THE FIELD OF MICROSCOPY AND RELATED FIELDS THERETO, CONSISTING ESSENTIALLY OF A HYDROGENATED TERPHENYL IN SOLUTION WITH AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYBUTENE DERIVATIVES AND MINERAL OIL TO PROVIDE AN INDEX OF REFRACTION BETWEEN THE RANGE OF 1.5100 AND 1.5240.
Claim 3
Dependent Claim
22 words
The oil according to claim 1 wherein the amount of said hydrogenated terphenyl in said solution is between 10 to 60 percent.
Claim 4
Dependent Claim
13 words
The oil according to claim 1 wherein said compound comprises a polybutene derivative.
Claim 5
Dependent Claim
17 words
The oil according to claim 3 wherein said at least one compound further includes a mineral oil.
Claim 6
Dependent Claim
34 words
An immersion oil for use in microscopy and related fields consisting essentially of a solution of a hydrogenated terphenyl with a polybutene to provide a solution having a refractive index between 1.5100 and 1.5240.
Claim 7
Dependent Claim
34 words
An immersion oil for use in microscopy and related fields consisting essentially of a solution of a hydrogenated terphenyl with a polybutene to provide a solution having a refractive index between 1.5100 and 1.5240.
Claim 8
Dependent Claim
11 words
The oil according to claim 5 further including a mineral oil.
Claim 9
Dependent Claim
26 words
The oil according to claim 5 wherein said polybutene is selected from a group having between 98 to 99.8 percent of a basic ISO butylene chain.
Claim 10
Dependent Claim
25 words
The oil according to claim 5 wherein said mineral oil is of the type having a specific gravity at 60* F between 0.875 and 0.895.
Claim 11
Dependent Claim
36 words
The immersion oil according to claim 5 wherein said hydRogenated terphenyl is of the type having three benzene rings with about 40 percent hydrogen and exists in said solution at a percentage between 10 to 60.
Claim 12
Dependent Claim
19 words
The oil according to claim 5 wherein said polybutene has a viscosity in the range between 120,000 to 900,000.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |