US5798693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic locating systems
Assignee: Callahan Cellular LLC
•
Filing: 1995-06-07
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Granted: 1998-08-25
•
Expires: 2015-06-07
Abstract
Abstract Methods and apparatus are disclosed for location of objects to facilitate retrieval, filing, security, inventory stock-keeping and the like. The methods and apparatus employ a tag element associated with each object-to-be-located, and interrogation system for searching one or more spatial regions for such tagged items, as well as mechanisms for identifying objects within the interrogated region.
Inventors
- 👤 Thomas J. Engellenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:32
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22; G08B13/24; G08B13/2402; G08B13/2405; G08B13/2414; G06; G06Q; G06Q10/00; G06Q10/08; G06Q10/087; G06Q10/0877; G08B13/2451; G08B13/2462; G08B13/2465; G08B13/2468; G08B13/2471; G08B13/2474; G08B13/248; G08B13/2482; G08B13/2485; G06Q10/08778
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A method of taking inventory of distributed items comprising the steps of: coding each item to be located with a tag responsive to a predetermined electromagnetic signal; interrogating at least one spatial region with said electromagnetic signal to cause the tag to generate a responsive signal if present within the region; detecting said responsive signal to confirm the tagged item's presence within a particular region; storing an inventory of information on locations of particular tagged items in a data storage device, inputting an inquiry for information on the location of an item; re-interrogating at least one spatial region to determine the location of the item; updating said inventory of information on locations of particular tagged items in said data storage device, and providing a response to the inquiry.
Claim 2
Independent Claim
128 words
A method of taking inventory of distributed items comprising the steps of: coding each item to be located with a tag responsive to a predetermined electromagnetic signal; interrogating at least one spatial region with said electromagnetic signal to cause the tag to generate a responsive signal if present within the region; detecting said responsive signal to confirm the tagged item's presence within a particular region; storing an inventory of information on locations of particular tagged items in a data storage device, inputting an inquiry for information on the location of an item; re-interrogating at least one spatial region to determine the location of the item; updating said inventory of information on locations of particular tagged items in said data storage device, and providing a response to the inquiry.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-24 | 2002-02-23 | 2002-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-24 | 2006-02-23 | 2006-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-24 | 2010-02-23 | 2010-08-25 | $7700.00 | Window Closed / Lapsed |