U.S. Patent 2,292,387
E495701
U.S. Patent 2,292,387 is the World War II–era patent co-invented by actress Hedy Lamarr that introduced a frequency-hopping communication system, a foundational technology for modern wireless communications.
All labels observed (2)
| Label | Occurrences |
|---|---|
| U.S. Patent 2,292,387 canonical | 1 |
| US Patent 2,292,387 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5139766 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: U.S. Patent 2,292,387 Context triple: [Hedy Lamarr, patent, U.S. Patent 2,292,387]
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A.
US382790A
US382790A is a United States patent granted to Emile Berliner for one of his pioneering inventions in sound recording technology, contributing to the development of the gramophone.
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B.
Letters Patent, 1947
The Letters Patent, 1947 are a constitutional instrument issued by King George VI that modernized and redefined the office and powers of the Governor General of Canada, effectively transferring many of the monarch’s duties in Canada to the Governor General.
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C.
US65249B1098
US65249B1098 is the International Securities Identification Number (ISIN) assigned to News Corporation’s Class A common stock.
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D.
US20030N1019
US20030N1019 is the International Securities Identification Number (ISIN) assigned to Comcast Corporation’s publicly traded stock.
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E.
US7443201022
US7443201022 is the International Securities Identification Number (ISIN) assigned to Prudential Financial's publicly traded stock.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: U.S. Patent 2,292,387 Target entity description: U.S. Patent 2,292,387 is the World War II–era patent co-invented by actress Hedy Lamarr that introduced a frequency-hopping communication system, a foundational technology for modern wireless communications.
-
A.
US382790A
US382790A is a United States patent granted to Emile Berliner for one of his pioneering inventions in sound recording technology, contributing to the development of the gramophone.
-
B.
Letters Patent, 1947
The Letters Patent, 1947 are a constitutional instrument issued by King George VI that modernized and redefined the office and powers of the Governor General of Canada, effectively transferring many of the monarch’s duties in Canada to the Governor General.
-
C.
US65249B1098
US65249B1098 is the International Securities Identification Number (ISIN) assigned to News Corporation’s Class A common stock.
-
D.
US20030N1019
US20030N1019 is the International Securities Identification Number (ISIN) assigned to Comcast Corporation’s publicly traded stock.
-
E.
US7443201022
US7443201022 is the International Securities Identification Number (ISIN) assigned to Prudential Financial's publicly traded stock.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
United States patent
ⓘ
frequency-hopping communication patent ⓘ |
| applicationNumber | 398,650 ⓘ |
| assignee |
George Antheil
ⓘ
Hedy Kiesler Markey ⓘ |
| associatedWith |
George Antheil’s work in mechanical synchronization
ⓘ
Hedy Lamarr’s contributions to technology ⓘ |
| citedAsPriorArtIn | later spread-spectrum patents ⓘ |
| classification | frequency-hopping ⓘ |
| coInventorWith |
George Antheil
ⓘ
Hedy Lamarr ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| describes |
method of synchronizing frequency changes between transmitter and receiver
ⓘ
secret communication system using frequency hopping ⓘ |
| designedFor |
military communications
ⓘ
torpedo guidance ⓘ |
| documentType | utility patent ⓘ |
| era | World War II ⓘ |
| fieldOfInvention |
frequency-hopping spread spectrum
ⓘ
secure radio communication ⓘ |
| filingDate | 1941-06-10 ⓘ |
| historicalSignificance | early practical proposal of frequency-hopping spread spectrum ⓘ |
| influenced |
Bluetooth
ⓘ
CDMA cellular technology ⓘ Wi‑Fi ⓘ modern wireless communication technologies ⓘ spread spectrum communications ⓘ |
| inventor |
George Antheil
ⓘ
Hedy Lamarr ⓘ |
| issueDate | 1942-08-11 ⓘ |
| jurisdiction |
United States Patent Office
ⓘ
linked to:
United States Patent and Trademark Office
|
| language | English ⓘ |
| medium | paper patent document ⓘ |
| ownerAtIssuance |
George Antheil
ⓘ
Hedy Kiesler Markey ⓘ |
| patentNumber | 2,292,387 ⓘ |
| priorityDate | 1941-06-10 ⓘ |
| purpose | to prevent enemy jamming of radio-controlled torpedoes ⓘ |
| relatedTo |
U.S. Navy torpedo control systems
ⓘ
secure spread-spectrum radio ⓘ |
| status | expired ⓘ |
| timeToIssue | about 14 months from filing to grant ⓘ |
| title | Secret Communication System ⓘ |
| uses | piano-roll-like mechanism for frequency control ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: U.S. Patent 2,292,387 Description of subject: U.S. Patent 2,292,387 is the World War II–era patent co-invented by actress Hedy Lamarr that introduced a frequency-hopping communication system, a foundational technology for modern wireless communications.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Delilah;Hedy Lamarr
linked to: U.S. Patent 2,292,387