US1781541
E439185
US1781541 is the United States patent granted to Albert Einstein and Leó Szilárd for their innovative absorption refrigerator design that operates without moving parts.
All labels observed (1)
| Label | Occurrences |
|---|---|
| US1781541 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4438474 — 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: US1781541 Context triple: [Einstein–Szilard refrigerator, hasPatent, US1781541]
-
A.
The Englert
The Englert is a historic performing arts venue in Iowa City, Iowa, hosting live music, theater, film, and community events.
-
B.
Omnibus
Omnibus is a celebrated painting by Swedish artist Anders Zorn, known for its dynamic depiction of urban life and masterful handling of light and atmosphere.
-
C.
Riegle
Riegle is a surname most notably associated with Donald W. Riegle Jr., a former United States Senator from Michigan.
-
D.
The Ike
The Ike is the common local nickname for the Eisenhower Expressway, a major segment of Interstate 290 serving the Chicago metropolitan area.
-
E.
Eltigen
Eltigen is a coastal village on the Kerch Peninsula in Crimea, historically notable as a key site of Soviet amphibious landings during World War II.
- 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: US1781541 Target entity description: US1781541 is the United States patent granted to Albert Einstein and Leó Szilárd for their innovative absorption refrigerator design that operates without moving parts.
-
A.
The Englert
The Englert is a historic performing arts venue in Iowa City, Iowa, hosting live music, theater, film, and community events.
-
B.
Omnibus
Omnibus is a celebrated painting by Swedish artist Anders Zorn, known for its dynamic depiction of urban life and masterful handling of light and atmosphere.
-
C.
Riegle
Riegle is a surname most notably associated with Donald W. Riegle Jr., a former United States Senator from Michigan.
-
D.
The Ike
The Ike is the common local nickname for the Eisenhower Expressway, a major segment of Interstate 290 serving the Chicago metropolitan area.
-
E.
Eltigen
Eltigen is a coastal village on the Kerch Peninsula in Crimea, historically notable as a key site of Soviet amphibious landings during World War II.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
United States patent
ⓘ
patent ⓘ |
| applicationNumber | US15638227A NERFINISHED ⓘ |
| assignee |
Albert Einstein
NERFINISHED
ⓘ
Leó Szilárd NERFINISHED ⓘ |
| associatedPerson |
Albert Einstein
NERFINISHED
ⓘ
Leó Szilárd NERFINISHED ⓘ |
| classification | F25B (refrigeration machines; absorption type) ⓘ |
| coInventorRelationship | Einstein–Szilárd refrigerator project NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| describes |
absorption refrigerator
ⓘ
electroless refrigerator ⓘ refrigeration system without moving mechanical parts ⓘ |
| documentType | patent specification ⓘ |
| energySource | heat source ⓘ |
| filingDate | 1927-12-16 ⓘ |
| grantDate | 1930-11-11 ⓘ |
| hasFeature |
designed to improve safety over compressor refrigerators
ⓘ
eliminates mechanical compressor ⓘ no moving mechanical parts in the cooling circuit ⓘ reduces risk of toxic refrigerant leakage due to moving parts failure ⓘ uses an absorption refrigeration cycle ⓘ uses heat as driving energy source ⓘ |
| hasLegalForm | granted patent ⓘ |
| inventionType |
mechanical engineering invention
ⓘ
thermodynamic system design ⓘ |
| inventor |
Albert Einstein
NERFINISHED
ⓘ
Leó Szilárd NERFINISHED ⓘ |
| issueDate | 1930-11-11 ⓘ |
| jurisdiction | United States Patent and Trademark Office NERFINISHED ⓘ |
| kind | B ⓘ |
| language | English ⓘ |
| notableFor |
being one of the few patents held by Albert Einstein
ⓘ
innovative absorption refrigerator design without moving parts ⓘ |
| priorityApplication | DE ⓘ |
| priorityDate | 1926-11-08 ⓘ |
| publicationDate | 1930-11-11 ⓘ |
| purpose |
domestic refrigeration
ⓘ
safe household refrigerator operation ⓘ |
| refrigerantType | ammonia-based working fluid (in related Einstein–Szilárd designs) ⓘ |
| relatedWork | Einstein–Szilárd refrigerator NERFINISHED ⓘ |
| safetyGoal | avoid explosions and leaks associated with early mechanical refrigerators ⓘ |
| status | expired ⓘ |
| technologyField |
household appliances
ⓘ
refrigeration ⓘ thermodynamics ⓘ |
| timePeriod | interwar period ⓘ |
| title | Refrigeration ⓘ |
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: US1781541 Description of subject: US1781541 is the United States patent granted to Albert Einstein and Leó Szilárd for their innovative absorption refrigerator design that operates without moving parts.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.