US4611588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser beam resistant material
Assignee: MTG Divestitures LLC
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Filing: 1985-06-05
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Granted: 1986-09-16
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Expires: 2005-06-05
Abstract
Abstract A shielding material for use in such as endotracheal tubes during laser beam surgery comprising a dispersion of particulate graphite in a polymer matrix.
Inventors
- 👤 Joseph E. Laptewicz, Jr.
- 👤 Roland Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:11
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61M; A61M16/00; A61M16/04; A61M16/0402; A61M16/0422; A61B90/00; A61B90/04; A61L; A61L31/00; A61L31/12; A61L31/125; A61L31/126; A61B2090/049
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
26 words
A shield for protecting matter from laser beam impingement, the shield being fabricated from a composite comprising a dispersion of particulate graphite in a polymer matrix.
Claim 2
Dependent Claim
26 words
A shield for protecting matter from laser beam impingement, the shield being fabricated from a composite comprising a dispersion of particulate graphite in a polymer matrix.
Claim 3
Dependent Claim
12 words
The shield of claim 1 wherein the particulate graphite is pyrolytic graphite.
Claim 4
Dependent Claim
18 words
The shield of claim 1 wherein the particulate graphite is at least partially oriented in the polymer matrix.
Claim 5
Dependent Claim
20 words
The shield of claim 1 wherein the particulate graphite constitutes from about 25 to 35 weight percent of the composite.
Claim 6
Dependent Claim
21 words
The shield of claim 1 wherein the particulate graphite has an average particle size of from about 50 to 100 microns.
Claim 7
Dependent Claim
12 words
The shield of claim 1 wherein the polymer matrix is silicone rubber.
Claim 8
Dependent Claim
13 words
The shield of claim 1 in the form of a sheet or tube.
Claim 9
Dependent Claim
18 words
An endotracheal tube fabricated from a composite comprising a dispersion of particulate pyrolytic graphite in an elastomer matrix.
Claim 10
Dependent Claim
18 words
An endotracheal tube fabricated from a composite comprising a dispersion of particulate pyrolytic graphite in an elastomer matrix.
Claim 11
Independent Claim
40 words
A method of reducing the effects from laser beam impingement on a heat-sensitive implement or living tissue, which comprises protecting the implement or tissue with a layer of composite material comprising a dispersion of particulate graphite in a polymer matrix.
Claim 12
Independent Claim
40 words
A method of reducing the effects from laser beam impingement on a heat-sensitive implement or living tissue, which comprises protecting the implement or tissue with a layer of composite material comprising a dispersion of particulate graphite in a polymer matrix.
Claim 13
Dependent Claim
22 words
The method of claim 9 wherein the particulate graphite is pyrolytic graphite and is at least partially oriented in the polymer matrix.
References Cited (Backward Citations)
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US3512183A
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US3862056A
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US3861029A
Cited
US3849345A
Cited
US4377164A
Cited
US4489722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |