Patent US6444818B2 successfully refreshed from Google Patents.
US6444818B2
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Metal complexes with chelating C-, N-donor ligands for forming metal-containing films
Assignee: Micron Technology Inc
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Filing: 2001-08-30
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Granted: 2002-09-03
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Expires: 2021-08-30
Abstract
Abstract A method of forming a film on a substrate using transition metal or lanthanide complexes. The complexes and methods are particularly suitable for the preparation of semiconductor structures using chemical vapor deposition techniques and systems.
Inventors
- 👤 Stefan Uhlenbrock
- 👤 Brian A. Vaartstra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:24
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/06; C23C16/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
120 words
A precursor composition comprising one or more complexes of the formula: wherein: M is a transition metal; each R group is independently H, a hydrocarbyl group, a halogenated hydrocarbyl group, a halide, or a silylated hydrocarbyl group, with the proviso that R 3 and R 4 are not both H, optionally any of the R groups are joined together to form a ring or rings, and optionally the R groups are replaced by multiple bonds between atoms; each L group is independently H, a hydrocarbyl group, a halogenated hydrocarbyl group, a silylated hydrocarbyl group, or a halide; x=1 to 3; n=0 to 4; y=0 to 4; and further wherein the precursor composition includes at least two complexes containing different metals.
Claim 2
Dependent Claim
120 words
A precursor composition comprising one or more complexes of the formula: wherein: M is a transition metal; each R group is independently H, a hydrocarbyl group, a halogenated hydrocarbyl group, a halide, or a silylated hydrocarbyl group, with the proviso that R 3 and R 4 are not both H, optionally any of the R groups are joined together to form a ring or rings, and optionally the R groups are replaced by multiple bonds between atoms; each L group is independently H, a hydrocarbyl group, a halogenated hydrocarbyl group, a silylated hydrocarbyl group, or a halide; x=1 to 3; n=0 to 4; y=0 to 4; and further wherein the precursor composition includes at least two complexes containing different metals.
Claim 3
Dependent Claim
25 words
The precursor composition of claim 1 wherein M is selected from the group consisting of Co, Rh, Ir, Fe, Ru, Os, Ni, Pd, and Pt.
Claim 4
Dependent Claim
17 words
The precursor composition of claim 1 wherein each R 3 and R 4 is a methyl group.
Claim 5
Dependent Claim
33 words
The precursor composition of claim 3 wherein each R 1 , R 2 , R 5 , and R 6 is hydrogen and each R 7 and R 8 is a methyl group.
Claim 6
Dependent Claim
36 words
The precursor composition of claim 3 wherein each R 1 and R 2 is SiMe 3 , each R 5 and R 6 is hydrogen, and each R 7 and R 8 is a methyl group.
Claim 7
Dependent Claim
10 words
The precursor composition of claim 1 which is a liquid.
Claim 8
Dependent Claim
14 words
The precursor composition of claim 1 comprising one or more complexes of the formula:
Claim 9
Dependent Claim
25 words
The precursor composition of claim 7 wherein M is selected from the group consisting of Co, Rh, Ir, Fe, Ru, Os, Ni, Pd, and Pt.
Claim 10
Dependent Claim
17 words
The precursor composition of claim 7 wherein each R 1 and R 2 is SiMe 3 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-09-02 | 2006-03-04 | 2006-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-09-02 | 2010-03-04 | 2010-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-09-02 | 2014-03-04 | 2014-09-03 | $7700.00 | Window Closed / Lapsed |