US3947121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for aligning microstructures
Assignee: Corning Glass Works
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Filing: 1973-07-30
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Granted: 1976-03-30
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Expires: 1993-07-30
Abstract
Abstract A device embodying a substrate having at least one longitudinal groove formed in a flat surface thereof for accommodating microstructures for microscopic examination.
Inventors
- 👤 Douglas A. Cotter
- 👤 Charles H. Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:51
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
The method of aligning microstructures for microscopic examination comprising the steps of providing a substrate having two opposite flat surfaces and at least one longitudinal channel formed in one of said surfaces, the depth of said channel being substantially constant throughout the length thereof, depositing a quantity of liquid containing said microstructures on said one surface of said substrate, pushing the microstructure containing liquid across said one surface of said substrate to permit the microstructures to drop into and be deposited in said channel in an aligned juxtaposed relationship, said channel being of sufficient size to accommodate a single layer of said microstructures in substantially single file in said aligned juxtaposed relationship, and removing the balance of said liquid.
Claim 2
Independent Claim
119 words
The method of aligning microstructures for microscopic examination comprising the steps of providing a substrate having two opposite flat surfaces and at least one longitudinal channel formed in one of said surfaces, the depth of said channel being substantially constant throughout the length thereof, depositing a quantity of liquid containing said microstructures on said one surface of said substrate, pushing the microstructure containing liquid across said one surface of said substrate to permit the microstructures to drop into and be deposited in said channel in an aligned juxtaposed relationship, said channel being of sufficient size to accommodate a single layer of said microstructures in substantially single file in said aligned juxtaposed relationship, and removing the balance of said liquid.
Claim 3
Independent Claim
122 words
The method of aligning leukocytes for microscopic examination comprising the steps of providing a substrate having two opposite flat surfaces and at least one longitudinal channel formed in one of said surfaces, the depth of said channel being substantially constant throughout the length thereof, depositing a quantity of blood, the erythrocytes of which have been lysed, on said one surface of said substrate, pushing said blood across said one surface of said substrate to permit the leukocytes to drop into and be deposited in said channel in an aligned juxtaposed relationship, said channel being of sufficient size to accommodate a single layer of said leukocytes in a substantially single file in said aligned juxtaposed relationship, and removing the balance of said blood.
Claim 4
Independent Claim
122 words
The method of aligning leukocytes for microscopic examination comprising the steps of providing a substrate having two opposite flat surfaces and at least one longitudinal channel formed in one of said surfaces, the depth of said channel being substantially constant throughout the length thereof, depositing a quantity of blood, the erythrocytes of which have been lysed, on said one surface of said substrate, pushing said blood across said one surface of said substrate to permit the leukocytes to drop into and be deposited in said channel in an aligned juxtaposed relationship, said channel being of sufficient size to accommodate a single layer of said leukocytes in a substantially single file in said aligned juxtaposed relationship, and removing the balance of said blood.
References Cited (Backward Citations)
US1878847A
Cited
US1940373A
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US2281100A
Cited
US3043183A
Cited
US3359055A
Cited
US3672745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |