Patent US4654229A successfully refreshed from Google Patents.
US4654229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of substrates with a uniform dispersion of extremely fine granules
Assignee: Sharp Corp
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Filing: 1986-01-27
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Granted: 1987-03-31
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Expires: 2006-01-27
Abstract
Abstract A method for the production of substrates with a uniform dispersion of extremely fine granules comprising: forming extremely fine granules in a granule-formation chamber under a reduced pressure by a gas-evaporation technique, introducing said extremely fine granules into a granule-recovering chamber under high vacuum, which is adjacent to said granule-formation chamber, through a slit formed in the partition between said granule-formation chamber and said granule-recovering chamber, and allowing said extremely fine granules to be dispersed on and attached to a supporter disposed in said granule-recovering chamber.
Inventors
- 👤 Tatsuo Morita
- 👤 Yoshiharu Nakajima
- 👤 Shigeo Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:19
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
86 words
A method for the production of substrates with a uniform dispersion of extremely fine granules comprising: forming extremely fine granules in a granule-formation chamber under a reduced pressure by a gas-evaporation technique, introducing said extremely fine granules into a granule-recovering chamber under high vacuum, which is adjacent to said granule-formation chamber, through a slit formed in the partition between said granule-formation chamber and said granule-recovering chamber, and allowing said extremely fine granules to be dispersed on and attached to a supporter disposed in said granule-recovering chamber.
Claim 2
Independent Claim
86 words
A method for the production of substrates with a uniform dispersion of extremely fine granules comprising: forming extremely fine granules in a granule-formation chamber under a reduced pressure by a gas-evaporation technique, introducing said extremely fine granules into a granule-recovering chamber under high vacuum, which is adjacent to said granule-formation chamber, through a slit formed in the partition between said granule-formation chamber and said granule-recovering chamber, and allowing said extremely fine granules to be dispersed on and attached to a supporter disposed in said granule-recovering chamber.
Claim 3
Dependent Claim
53 words
A method for the production of substrates with a uniform dispersion of extremely fine granules according to claim 1, wherein said partition is provided with a throttling mechanism which attains a variable control of the diameter of said slit to thereby adjust the pressure difference between said granule-formation chamber and said granule-recovering chamber.
Claim 4
Dependent Claim
42 words
A method for the production of substrates with a uniform dispersion of extremely fine granules according to claim 1, wherein said supporter is cooled by a cooling means while said extremely fine granules are being dispersed on and attached to said supporter.
Claim 5
Dependent Claim
56 words
A method for the production of substrates with a uniform dispersion of extremely fine granules according to claim 1, which further comprises evaporating a dispersion medium composed of evaporable materials contained in said granule-recovering chamber, and allowing said extremely fine granules to be dispersed on and attached to said supporter, together with said evaporated dispersion medium.
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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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |