---
title: "US Patent 5,819,226 is confirmed as HNC's own founding patent for Falcon Fraud Manager, not an unrelated filing"
type: "claim"
status: "seedling"
audit_status: "capture-verified — read directly from the patent PDF (TLS verified) at capture time, 2026-08-02. Queen's independent re-check not yet run; USPTO's own direct endpoints are known-blocked (sources.md), Google Patents is the reachable mirror per house convention. || 2026-08-08 cross-model audit (auditor claude-opus-5, writer claude-sonnet-5): grant PDF independently re-fetched via extract_pdf (patentimages.storage.googleapis.com, TLS verified, 45 pp., sha256 b9594d71…) and the Google Patents full text re-fetched separately. CLAIM CONFIRMED: 'FALCON Monitor' appears verbatim as the title bar of the screen drawn in FIGURE 2 (Sheet 2 of 21); filing date 'Sep. 8, 1992', assignee 'HNC Software Inc., San Diego, Calif.' and all six named inventors confirmed on the front page. THREE POINTERS CORRECTED. (1) source_url pointed at the Google Patents HTML page, where the quoted string does NOT appear — the words are inside the drawing sheet, which the HTML mirror does not carry as text. source_url now points at the grant PDF, where the string is machine-verifiable; the Google Patents page remains recorded in source_venue as the house-convention mirror. (2) source_sha was 63 hex characters, one short of a sha256 and matching no fetched artifact ('d4d140f1c06181682339474604bf194ff2c3dcbfe741f6073561885b23cb607', preserved here); replaced with the verified sha256 of the grant PDF. (3) The body said the caption sits 'in the patent's own text'; the word Falcon appears nowhere in the specification, claims or abstract — only in the FIG. 2 drawing. Body amended to say which. Also corrected: the patent's Hecht-Nielsen citation is dated (1992), the same year as the filing, not four years after it."
source_url: "https://patentimages.storage.googleapis.com/pdfs/US5819226.pdf"
source_sha: "b9594d7179a77fcc0bc8643d6a19296fc6e35e08a0603d74df09d5ee63c0f81e"
source_title: "Fraud Detection Using Predictive Modeling"
source_author: "Krishna M. Gopinathan, Louis S. Biafore, William M. Ferguson, Michael A. Lazarus, Anu K. Pathria, Allen Jost (named inventors); assignee HNC Software Inc."
source_date: "1992-09-08T00:00:00.000Z"
source_venue: "U.S. Patent No. 5,819,226 (USPTO; grant PDF served by patentimages.storage.googleapis.com, Google Patents' own document store, treated per sources.md house convention as a primary-document mirror for reproduced grant text. HTML mirror: https://patents.google.com/patent/US5819226A/en — carries the specification text but not the drawing sheets' text)"
source_quote: "FALCON Monitor"
source_tier: 1
provenance: "Promotion from 10-inbox/raw/2026-08-02-what-is-the-actual-model-architecture-of-hncs.md, 2026-08-02"
origin: "batch"
derived_from: "10-inbox/raw/2026-08-02-what-is-the-actual-model-architecture-of-hncs.md"
date_created: "2026-08-02T00:00:00.000Z"
writer_model: "claude-sonnet-5"
tags: ["hnc","falcon","fico","fraud-detection","patents","provenance","deep-learning-history"]
audits: ["2026-08-08 claude-opus-5","2026-08-10 claude-fable-5"]
verified_verbatim: "2026-08-11 — source_quote matched verbatim (normalized) against a direct fetch of source_url by seek_verify (no model involved)"
seek_code_commit: "f2cca7f"
---


U.S. Patent 5,819,226, "Fraud Detection Using Predictive Modeling," draws its
own Figure 2 — described in the specification as "a sample system monitor
screen which forms part of a typical output interface for the present
invention" — with the words "FALCON Monitor" printed as the screen's title
bar (Sheet 2 of 21). The product name lives in the drawing, not in the prose:
"Falcon" appears nowhere in the specification, claims or abstract, which is
why the granted PDF and not the HTML mirror is the citable artifact here.
Combined with the filing date (September 8, 1992 — the year HNC's
Falcon Fraud Manager is independently dated to in
[[claim-hnc-falcon-fraud-manager-became-fico-infrastructure]]) and the
assignee (HNC Software Inc., San Diego), this ties the patent directly to
the Falcon product, rather than to some other, unrelated HNC filing. This is
the evidentiary link that upgrades the patent from "a plausible HNC patent"
to "the patent describing Falcon itself" — the fact the architecture claims
in
[[claim-hnc-1992-falcon-patent-names-network-architecture-as-feed-forward]],
[[claim-hnc-1992-falcon-patent-specifies-backpropagation-gradient-descent-supervised-training]],
and
[[claim-hnc-falcon-patent-describes-multilayer-not-single-layer-network]]
actually depend on to apply to Falcon specifically.

The same patent's background citations, offered "for a more detailed
description of neural networks," name "D. E. Rumelhart et al" — the 1986
*Nature* 323 paper "Learning Representations by Back-Propagating Errors,"
pp. 533–36, whose full authorship is Rumelhart, Hinton and Williams, see
[[claim-rhw-1986-demonstration-not-invention]] — and R. Hecht-Nielsen,
"Theory of the Backpropagation Neural Network," in *Neural Networks for
Perception*, pp. 65–93 (1992), a chapter by
[[entity-robert-hecht-nielsen|HNC's own co-founder]]. Both are the vault's
already-tracked foundational backpropagation lineage; this patent is a
concrete, dated instance of that lineage becoming commercial fraud-scoring
infrastructure — filed in September 1992, the same year the Hecht-Nielsen
chapter it cites went to print.