US4138216B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for monitoring ethylene oxide sterilization process
Assignee: Pymah Corp
•
Filing: 1977-12-23
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Granted: 1997-06-17
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Expires: 1997-12-23
Abstract
No abstract record available.
Inventors
- 👤 Raymond P Larsson
- 👤 Robert J Witonsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:21
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/226; Y; Y10; Y10S; Y10S252/00; Y10S252/962; Y10T; Y10T436/00; Y10T436/20; Y10T436/200833
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-16 | 2000-12-16 | 2001-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-16 | 2004-12-16 | 2005-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-16 | 2008-12-16 | 2009-06-17 | $7700.00 | Window Closed / Lapsed |