US4533489A
Expired / Lapsed
US
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Formable light reflective compositions
Assignee: HARSHAW/FILTRON PARTNRSHIP CLEVELAND OH A PARTNERSHIP OF
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Filing: 1983-12-07
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Granted: 1985-08-06
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Expires: 2003-12-07
Abstract
Abstract A light-reflective, flowable and curable composition is described which comprises a resin containing light-reflective solid particles in an amount and of average particle size sufficient to provide the desired light reflectance/transmittance characteristics to the cured composition. Preferably, the composition is self-leveling, and the solid particles may be particles of magnesium oxide, barium sulfate, aluminum oxide or mixtures thereof. The compositions of the invention are useful as reflective coatings in various applications such as for radiation detector devices including scintillator crystals.
Inventors
- 👤 Bradley K. Utts
- 👤 Oley D. Wimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:39
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2002; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C09; C09D; C09D5/00; C09D5/004; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4785
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
68 words
A light-reflective, self-leveling flowable and curable composition comprising a silicone resin containing a mixture of aluminum oxide particles wherein the particles comprise a mixture of (a) particles having an average particle size of about 3 microns, and (b) particles having an average particle size of about 0.03 microns, said mixture of particles being present in an amount sufficient to provide the desired light-reflectance/transmittance characteristics to the cured composition.
Claim 2
Dependent Claim
68 words
A light-reflective, self-leveling flowable and curable composition comprising a silicone resin containing a mixture of aluminum oxide particles wherein the particles comprise a mixture of (a) particles having an average particle size of about 3 microns, and (b) particles having an average particle size of about 0.03 microns, said mixture of particles being present in an amount sufficient to provide the desired light-reflectance/transmittance characteristics to the cured composition.
Claim 3
Dependent Claim
49 words
The composition of claim 1 wherein the mixture comprises from about 10 to 20 parts of the particles having an average particle size of about 3 microns, and 1 to 10 parts of the particles having an average particle size of about 0.03 micron in 100 parts of resin.
Claim 4
Dependent Claim
13 words
The composition of claim 1 also containing up to 10% of carbon particles.
Claim 5
Dependent Claim
39 words
A scintillator crystal partially coated with a light-reflective, flowable and curable composition comprising a resin containing light-reflective solid particles in an amount and of an average particle size sufficient to provide the desired light-reflectance/transmittance characteristics to the cured composition.
Claim 6
Dependent Claim
39 words
A scintillator crystal partially coated with a light-reflective, flowable and curable composition comprising a resin containing light-reflective solid particles in an amount and of an average particle size sufficient to provide the desired light-reflectance/transmittance characteristics to the cured composition.
Claim 7
Dependent Claim
11 words
The scintillator crystal of claim 4 wherein the composition is self-leveling.
Claim 8
Dependent Claim
13 words
The scintillator crystal of claim 4 wherein the resin is a silicone resin.
Claim 9
Dependent Claim
23 words
The scintillator crystal of claim 4 wherein the light-reflective solid particles are magnesium oxide, barium sulfate or aluminum oxide particles or mixtures thereof.
Claim 10
Dependent Claim
26 words
The scintillator crystal of claim 7 wherein the particles comprise a mixture of particles ranging in size from about 0.001 to about 20 microns in diameter.
Claim 11
Dependent Claim
27 words
The scintillator crystal of claim 4 containing from about 1 to about 75 parts by weight of light-reflective solid particles per 100 parts by weight of resin.
Claim 12
Dependent Claim
24 words
The scintillator crystal of claim 9 wherein the particles comprise a mixture of particles ranging in size from about 0.001 to about 20 microns.
Claim 13
Dependent Claim
62 words
A scintillator crystal partially coated with a light-reflective, self-leveling, flowable and curable composition comprising a silicone resin containing magnesium oxide, barium sulfate, or aluminum oxide particles or mixtures thereof having an average particle size of from about 0.01 to about 5 microns in diameter, said particles being present in an amount sufficient to provide the desired light-reflectance/transmittance characteristics to the cured composition.
Claim 14
Dependent Claim
62 words
A scintillator crystal partially coated with a light-reflective, self-leveling, flowable and curable composition comprising a silicone resin containing magnesium oxide, barium sulfate, or aluminum oxide particles or mixtures thereof having an average particle size of from about 0.01 to about 5 microns in diameter, said particles being present in an amount sufficient to provide the desired light-reflectance/transmittance characteristics to the cured composition.
Claim 15
Dependent Claim
40 words
The scintillator crystal of claim 11 wherein the particles are aluminum oxide particles comprising a mixture of (a) particles having an average particle size of about 3 microns and (b) particles having an average particle size of about 0.03 microns.
Claim 16
Dependent Claim
36 words
The scintillator crystal of claim 12 wherein the mixture comprises from about 10 to 20 parts of the 3 micron particles and 1 to 10 parts of the 0.03 micron particles in 100 parts of resin.
Claim 17
Dependent Claim
14 words
The scintillator crystal of claim 11 also containing up to 10% of carbon particles.
Claim 18
Dependent Claim
52 words
A plurality of scintillator crystal elements partially coated with a light-reflective, flowable and curable composition comprising a resin containing light-reflective solid particles in an amount and of an average particle size sufficient to provide the desired light-reflectance/transmittance characteristics to the cured composition and to provide optical isolation of one element from another.
Claim 19
Dependent Claim
52 words
A plurality of scintillator crystal elements partially coated with a light-reflective, flowable and curable composition comprising a resin containing light-reflective solid particles in an amount and of an average particle size sufficient to provide the desired light-reflectance/transmittance characteristics to the cured composition and to provide optical isolation of one element from another.
Claim 20
Dependent Claim
11 words
The crystal elements of claim 15 wherein the composition is self-leveling.
Claim 21
Dependent Claim
13 words
The crystal elements of claim 15 wherein the resin is a silicone resin.
Claim 22
Dependent Claim
23 words
The crystal elements of claim 15 wherein the light-reflective solid particles are magnesium oxide, barium sulfate or aluminum oxide particles or mixtures thereof.
Claim 23
Dependent Claim
26 words
The crystal elements of claim 18 wherein the particles comprise a mixture of particles ranging in size from about 0.001 to about 20 microns in diameter.
Claim 24
Dependent Claim
27 words
The crystal elements of claim 15 containing from about 1 to about 75 parts by weight of light-reflective solid particles per 100 parts by weight of resin.
Claim 25
Dependent Claim
24 words
The crystal elements of claim 20 wherein the particles comprise a mixture of particles ranging in size from about 0.001 to about 20 microns.
Claim 26
Dependent Claim
62 words
The crystal element partially coated with a light-reflective, self-leveling, flowable and curable composition comprising a silicone resin containing magnesium oxide, barium sulfate, or aluminum oxide particles or mixtures thereof having an average particle size of from about 0.01 to about 5 microns in diameter, said particles being present in an amount sufficient to provide the desired light-reflectance/transmittance characteristics to the cured composition.
Claim 27
Dependent Claim
62 words
The crystal element partially coated with a light-reflective, self-leveling, flowable and curable composition comprising a silicone resin containing magnesium oxide, barium sulfate, or aluminum oxide particles or mixtures thereof having an average particle size of from about 0.01 to about 5 microns in diameter, said particles being present in an amount sufficient to provide the desired light-reflectance/transmittance characteristics to the cured composition.
Claim 28
Dependent Claim
40 words
The crystal elements of claim 22 wherein the particles are aluminum oxide particles comprising a mixture of (a) particles having an average particle size of about 3 microns and (b) particles having an average particle size of about 0.03 microns.
Claim 29
Dependent Claim
36 words
The crystal elements of claim 23 wherein the mixture comprises from about 10 to 20 parts of the 3 micron particles and 1 to 10 parts of the 0.03 micron particles in 100 parts of resin.
Claim 30
Dependent Claim
17 words
The crystal elements of claim 23 wherein the composition also contains up to 10% of carbon particles.
References Cited (Backward Citations)
US4374749A
Cited
US4363155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |