Patent US5737071A successfully refreshed from Google Patents.
US5737071A
Expired / Lapsed
US
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Method and apparatus for enhancing live-scan fingerprint reader images
Assignee: INDENTICATOR ACQUISITION CORP
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Filing: 1996-08-16
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Granted: 1998-04-07
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Expires: 2016-08-16
Abstract
Abstract A method and apparatus for improving the optical boundary between a person's fingerprint ridges and the surface platen of a live-scan-imaging apparatus includes providing an absorbent pad containing chemicals selected from the nonvolatile oils, oil amides, fatty alcohols and fatty acid esters, placing the person's finger to be scanned on the surface of the absorbent pads to coat the fingerprint ridges and subsequently placing the person's finger with the coated fingerprint ridges on the platen of the imaging apparatus to provide a high contrast between the ridges and valleys of the fingerprint area.
Inventors
- 👤 Douglas C. Arndt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:32
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/117; A61B5/1171; A61B5/1172; A61B5/41; A61B5/411; G; G06; G06V; G06V40/00; G06V40/10; G06V40/12; G06V40/13; G06V40/1324
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
124 words
A combination dispensing pad and chemical reagent for applying a chemical composition to the fingerprint area of a person's fingers prior to the placement thereof on the imaging platen of a live-scan-electro-optical-fingerprint-imaging apparatus to provide a clear optical boundary between the ridges defining the person's fingerprint and the surface of the platen comprising: a substantially noncompressible microporous pad formed from a ceramic or polyethylene material and having a pore volume within the range of about 10 to 50% and a pore diameter within the range of about 0.1 to 10 microns; and a liquid chemical composition disposed within the pad, the composition consisting of one or more materials selected from the group of nonvolatile oils, nonvolatile oil complexes, fatty alcohols and fatty acid esters.
Claim 2
Dependent Claim
124 words
A combination dispensing pad and chemical reagent for applying a chemical composition to the fingerprint area of a person's fingers prior to the placement thereof on the imaging platen of a live-scan-electro-optical-fingerprint-imaging apparatus to provide a clear optical boundary between the ridges defining the person's fingerprint and the surface of the platen comprising: a substantially noncompressible microporous pad formed from a ceramic or polyethylene material and having a pore volume within the range of about 10 to 50% and a pore diameter within the range of about 0.1 to 10 microns; and a liquid chemical composition disposed within the pad, the composition consisting of one or more materials selected from the group of nonvolatile oils, nonvolatile oil complexes, fatty alcohols and fatty acid esters.
Claim 3
Dependent Claim
84 words
The dispensing pad and chemical reagent of claim 1 wherein the absorbent pad includes a microporous pad having a top surface through which the chemical composition is supplied to the fingerprint area of the person's finger, the pad further having a pore volume within the range of about 10 to 50 percent and a mean pore diameter within the range of about 0.10 to 10.0 microns, the pad being substantially noncompressible in response to the pressure of a fingertip placed thereon for coating purposes.
Claim 4
Dependent Claim
22 words
The dispensing pad and chemical reagent of claim 2 wherein the absorbent pad further includes a reservoir positioned below the microporous pad.
Claim 5
Dependent Claim
30 words
The dispensing pad and chemical reagent of claim 3 wherein the microporous pad is made of ceramic with a mean pore diameter within the range of 0.90 to 1.0 microns.
Claim 6
Dependent Claim
17 words
The dispensing pad and chemical reagent of claim 1 wherein the microporous pad is made of polyethylene.
Claim 7
Dependent Claim
27 words
The dispensing pad and chemical reagent of claim 1 wherein the chemical composition consists of materials selected from the group of nonvolatile oils and nonvolatile oil complexes.
Claim 8
Dependent Claim
16 words
The dispensing pad and chemical reagent of claim 6 wherein the nonvolatile oil complexes are diethanolamides.
Claim 9
Dependent Claim
25 words
The dispensing pad and chemical reagent of claim 7 wherein the nonvolatile oil complexes are chosen from group consisting of coco diethanolamide and soya diethanolamide.
Claim 10
Dependent Claim
37 words
The dispensing pad and chemical reagent of claim 1 wherein the chemical composition consists of one or more fatty alcohols selected from the group of behenyl, iso-stearlyl, iso-cetyl, arachidyl, stearyl, cetyl, oleyl, myristyl, lauryl, decyl, and octyl.
Claim 11
Dependent Claim
58 words
The dispensing pad and chemical reagent of claim 1 wherein the chemical composition consists of one or more fatty acid esters formed by the reaction products of one or more of the following alcohols methyl, ethyl, propyl, butyl, isopoply, glycols, glycerol and polyol with one or more of the following fatty acids myristic, oleic, lauric, stearic, and palmitic.
Claim 12
Dependent Claim
19 words
The dispensing pad and chemical reagent of claim 10 wherein the fatty acid ester of alcohol is isopropyl myristrate.
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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) | 2001-04-06 | 2001-10-06 | 2002-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-06 | 2005-10-06 | 2006-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-06 | 2009-10-06 | 2010-04-07 | $7700.00 | Window Closed / Lapsed |