US3240994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing apparent viscosity of nonconductive fluids
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1962-03-02
•
Granted: 1966-03-15
•
Expires: 1982-03-02
Abstract
No abstract record available.
Inventors
- 👤 Otmar M Stuetzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:07
CPC Classifications
G; G01; G01N; G01N11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A METHOD OF INCREASING THE APPARENT VISCOSITY OF A NONCONDUCTIVE LIQUID, WHICH COMPRISES INJECTING IONS OF ONE POLARITY INTO THE NONCONDUCTIVE LIQUID TO CREATE A SPACE CHARGE AND A HIGH ELECTRIC FIELD IN THE NONCONDUCTIVE LIQUID, AND CAUSING MOVEMENT OF AT LEAST A PORTION OF SAID LIQUID.
Claim 2
Independent Claim
47 words
A METHOD OF INCREASING THE APPARENT VISCOSITY OF A NONCONDUCTIVE LIQUID, WHICH COMPRISES INJECTING IONS OF ONE POLARITY INTO THE NONCONDUCTIVE LIQUID TO CREATE A SPACE CHARGE AND A HIGH ELECTRIC FIELD IN THE NONCONDUCTIVE LIQUID, AND CAUSING MOVEMENT OF AT LEAST A PORTION OF SAID LIQUID.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |