US2874091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable culturing device
Assignee: Hyland Laboratories Inc
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Filing: 1956-07-23
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Granted: 1959-02-17
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Expires: 1976-07-23
Abstract
No abstract record available.
Inventors
- 👤 Roy T Fisk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:23
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/02; C12M23/10; C12M23/22; C12M23/26; C12M23/28; C12M23/34; C12M23/38; C12M25/00; C12M25/06; Y; Y10; Y10S; Y10S435/00; Y10S435/81
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A DISPOSABLE CULTURING DEVICE, A TRANSPARENT, RESILIENT PETRI DISH, SAID DISH BEING GENERALLY IN THE NATURE OF A SHALLOW CYLINDER, A COVER ON SAID DISH CONSTRUCTED OF LIKE MATERIAL AND HAVING THE SAME SHAPE BUT OF A GREATER DIAMETER TO FIT LOOSELY THEREON, A LAYER OF CULTURE MEDIUM ADHESIVELY BONDED TO THE INNER BOTTOM OF SAID DISH, AND A MICROORGANISM-IMPENETRABLE, TRANSPARENT, FLEXIBLE, HEATSEAL PLASTIC ENVELOPE ABOUT THE ASSEMBLE DISH AND COVER, SAID ENVELOP BEING SIZED TO PERMIT READY INSERTTION AND REMOVAL OF THE ASSEMBLY AND TO PREVENT DISASSEMBLY WHEN THE ASSEMBLY IS SEALED WITHIN SAID ENVELOPE.
Claim 2
Dependent Claim
97 words
IN A DISPOSABLE CULTURING DEVICE, A TRANSPARENT, RESILIENT PETRI DISH, SAID DISH BEING GENERALLY IN THE NATURE OF A SHALLOW CYLINDER, A COVER ON SAID DISH CONSTRUCTED OF LIKE MATERIAL AND HAVING THE SAME SHAPE BUT OF A GREATER DIAMETER TO FIT LOOSELY THEREON, A LAYER OF CULTURE MEDIUM ADHESIVELY BONDED TO THE INNER BOTTOM OF SAID DISH, AND A MICROORGANISM-IMPENETRABLE, TRANSPARENT, FLEXIBLE, HEATSEAL PLASTIC ENVELOPE ABOUT THE ASSEMBLE DISH AND COVER, SAID ENVELOP BEING SIZED TO PERMIT READY INSERTTION AND REMOVAL OF THE ASSEMBLY AND TO PREVENT DISASSEMBLY WHEN THE ASSEMBLY IS SEALED WITHIN SAID ENVELOPE.
References Cited (Backward Citations)
US2672431A
Cited
US2677646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |