Patent US3729947A successfully refreshed from Google Patents.
US3729947A
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Process for storing blood platelets
Assignee: Alza Corp
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Filing: 1970-12-04
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Granted: 1973-05-01
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Expires: 1990-12-04
Abstract
Abstract A process for storing blood platelets while simultaneously preserving the viability and integrity of the platelets by maintaining the platelets at a pressure of 100 to 1,000 psi and at a temperature of just above the freezing temperature of the platelets to about ambient temperature. The platelets may be stored alone or with platelet preserving agents.
Inventors
- 👤 T Higuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:03
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/557
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
30 words
A process for storing platelets according to claim 1 wherein the platelets are stored at a pressure of 100 to 1,000 psi and at a temperature of 10* to 15*C.
Claim 2
Dependent Claim
67 words
A process for storing platelets according to claim 1 wherein the platelets are stored at a pressure of 100 to 1,000 psi and at a temperature of 2* to 25*C and in combination with a platelet anti-aggregation prostaglandin selected from the group consisting essentially of 11 Alpha ,15(S)-dihydroxy-9-oxo-13-trans-prostenoic acid, 11 Alpha ,15(S)-dihydroxy-9-oxo-13-trans-8-iso-prostenoic acid, 11 Alpha ,15(S)-dihydroxy-9-oxo-13-trans- omega -homo-prostenoic acid, mixtures thereof and the pharmaceutically acceptable salts thereof.
Claim 3
Dependent Claim
49 words
A process for storing platelets according to claim 1 wherein the platelets are stored at a pressure of 100 to 1,000 psi and at a temperature of 2* to 25*C and wherein the platelets are stored in a container that transmits the pressure and the temperature to the platelets.
Claim 4
Dependent Claim
16 words
A process for storing platelets according to claim 1 wherein the container is a plastic container.
References Cited (Backward Citations)
US2662520A
Cited
US2786014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |