# Pyrex

> trademark originally used for borosilicate glass

**Wikidata**: [Q2637631](https://www.wikidata.org/wiki/Q2637631)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Pyrex)  
**Source**: https://4ort.xyz/entity/pyrex

## Summary
Pyrex is a trademark originally used for borosilicate glass, a type of amorphous solid that exhibits a glass transition when heated towards the liquid state. It is classified as a subclass of glass and has been widely recognized in commercial contexts, particularly in the kitchenware industry, due to its durability and heat resistance.

## Key Facts
- **Trademark for borosilicate glass**: Pyrex is a registered trademark for a specific type of glass known for its thermal resistance and chemical durability.
- **Amorphous solid classification**: Pyrex falls under the category of glass, which is defined as an amorphous solid exhibiting a glass transition when heated.
- **Inception date**: The trademark was established on December 29, 1994.
- **Manufacturer**: Pyrex is produced by Corning Incorporated, a major glass manufacturer.
- **Structured data properties**:
  - P18: Image identifier for Pyrex (PYREX.jpg).
  - P244: Library of Congress Subject Heading (LCSH) identifier (sh85109324).
  - P268: National Library of Medicine (NLM) identifier (16934113r).
  - P269: Library of Congress Classification (LCC) identifier (182805727).
  - P373: Commons category name (Pyrex).
  - P646: Freebase identifier (/m/01vdc9).
  - P1014: Art & Architecture Thesaurus identifier (300010801).
  - P1109: Refractive index (1.474).
  - P1296: Library of Congress Control Number (LCCN) (0135887).
  - P1417: Wikidata property for topic (topic/Pyrex).
  - P2003: Official website domain (pyrexhome).
  - P2163: VIAF identifier (1084625).
  - P3222: Twitter username (pyrex).
  - P3544: Library of Congress Classification (LCC) number (6544).
  - P8189: WorldCat identifier (987007550899305171).
  - P8313: Wikidata property for label (Pyrex).
  - P12385: Wikidata property for alias (pyrex).
  - P13591: Concept URI (concept/b906e767-66af-45f0-a788-2d325f84de13).
- **Wikipedia presence**: Pyrex has 25 Wikipedia sitelinks, including English, German, French, and Japanese.
- **Wikidata classification**: Pyrex is an instance of Q167270 (trademark) and Q431289 (brand), and a subclass of Q11469 (glass).
- **External identifiers**:
  - YSO ID: 23851
  - Golden ID: Brand-6NGDYV
  - Kbpedia ID: Brand
  - BabelNet ID: 00012758n
  - Freebase ID: /m/01cd9
  - Art & Architecture Thesaurus ID: 300266718
  - Great Russian Encyclopedia Online ID (2017): 1885750
  - WordNet 3.1 Synset ID: 06858649-n
  - OpenStreetmap Key: brand
  - BBC Things ID: 8328459e-0b04-404c-848e-5daca95ff1d5
  - Zhihu Topic ID: 19551643
  - Reddit Topic ID: brand
  - TED Topic ID: Brand
  - Quora Topic: Brands-and-Branding
  - Museum Digital Tag ID: 104500
  - Interlingual Index ID: i72495
  - Pactols Thesaurus ID: pcrtWTaS7cXjuS
  - Australian Educational Vocabulary ID: scot/2785
  - Encyclopædia Universalis ID: marque-marketing
  - Google Play Store ID: brand_-_varemerke
  - NL CR Aut ID: ph166532
  - Encyclopedia of Ideas ID: brand
  - JSTOR Topic ID (archived): brands
  - Great Russian Encyclopedia Portal ID: brend-05a5f7

## FAQs
**What type of glass is Pyrex?**
Pyrex is a trademark for borosilicate glass, a type of amorphous solid that exhibits a glass transition when heated towards the liquid state. It is classified as a subclass of glass and is known for its thermal resistance and chemical durability.

**Who manufactures Pyrex?**
Pyrex is manufactured by Corning Incorporated, a leading glass manufacturer. The trademark was established on December 29, 1994.

**What are the key properties of Pyrex glass?**
Pyrex glass has a refractive index of 1.474 and is known for its thermal resistance and chemical durability. It is an amorphous solid that exhibits a glass transition when heated.

**How is Pyrex classified in structured data systems?**
In Wikidata, Pyrex is classified as an instance of Q167270 (trademark) and Q431289 (brand), and a subclass of Q11469 (glass). It is also associated with various structured data properties, including P18 (image identifier), P244 (LCSH identifier), and P268 (NLM identifier).

**What are the external identifiers associated with Pyrex?**
Pyrex is referenced in multiple external databases and knowledge graphs, including YSO (23851), Golden (Brand-6NGDYV), Kbpedia (Brand), BabelNet (00012758n), and Freebase (/m/01cd9). It also has identifiers in the Art & Architecture Thesaurus, Great Russian Encyclopedia, WordNet, and various community-driven platforms.

## Why It Matters
Pyrex plays a significant role in the kitchenware industry due to its durability and heat resistance. As a trademark for borosilicate glass, it has been widely recognized for its ability to withstand high temperatures without breaking or warping, making it ideal for cooking and baking applications. The establishment of the Pyrex trademark in 1994 marked a pivotal moment in the commercialization of borosilicate glass, providing consumers with a reliable and high-quality product. Its extensive representation across various databases and knowledge graphs underscores its universal relevance in both commercial and domestic contexts.

## Notable For
- Being a trademark for borosilicate glass, known for its thermal resistance and chemical durability.
- Having a refractive index of 1.474, indicating its optical properties.
- Being manufactured by Corning Incorporated, a major glass manufacturer.
- Possessing structured data properties in Wikidata, including P18 (image identifier), P244 (LCSH identifier), and P268 (NLM identifier).
- Having external identifiers in databases such as YSO, Golden, Kbpedia, BabelNet, and Freebase.
- Being classified as an instance of Q167270 (trademark) and Q431289 (brand), and a subclass of Q11469 (glass) in Wikidata.
- Having a Wikipedia presence with 25 sitelinks, including English, German, French, and Japanese.

## Body

### Definition and Classification
Pyrex is a trademark originally used for borosilicate glass, a type of amorphous solid that exhibits a glass transition when heated towards the liquid state. It is classified as a subclass of glass and is known for its thermal resistance and chemical durability. The trademark was established on December 29, 1994, and is manufactured by Corning Incorporated.

### Structured Data Properties
Pyrex is associated with various structured data properties in Wikidata, including:
- P18: Image identifier for Pyrex (PYREX.jpg).
- P244: Library of Congress Subject Heading (LCSH) identifier (sh85109324).
- P268: National Library of Medicine (NLM) identifier (16934113r).
- P269: Library of Congress Classification (LCC) identifier (182805727).
- P373: Commons category name (Pyrex).
- P646: Freebase identifier (/m/01vdc9).
- P1014: Art & Architecture Thesaurus identifier (300010801).
- P1109: Refractive index (1.474).
- P1296: Library of Congress Control Number (LCCN) (0135887).
- P1417: Wikidata property for topic (topic/Pyrex).
- P2003: Official website domain (pyrexhome).
- P2163: VIAF identifier (1084625).
- P3222: Twitter username (pyrex).
- P3544: Library of Congress Classification (LCC) number (6544).
- P8189: WorldCat identifier (987007550899305171).
- P8313: Wikidata property for label (Pyrex).
- P12385: Wikidata property for alias (pyrex).
- P13591: Concept URI (concept/b906e767-66af-45f0-a788-2d325f84de13).

### External Identifiers
Pyrex is referenced in multiple external databases and knowledge graphs, including:
- YSO ID: 23851
- Golden ID: Brand-6NGDYV
- Kbpedia ID: Brand
- BabelNet ID: 00012758n
- Freebase ID: /m/01cd9
- Art & Architecture Thesaurus ID: 300266718
- Great Russian Encyclopedia Online ID (2017): 1885750
- WordNet 3.1 Synset ID: 06858649-n
- OpenStreetmap Key: brand
- BBC Things ID: 8328459e-0b04-404c-848e-5daca95ff1d5
- Zhihu Topic ID: 19551643
- Reddit Topic ID: brand
- TED Topic ID: Brand
- Quora Topic: Brands-and-Branding
- Museum Digital Tag ID: 104500
- Interlingual Index ID: i72495
- Pactols Thesaurus ID: pcrtWTaS7cXjuS
- Australian Educational Vocabulary ID: scot/2785
- Encyclopædia Universalis ID: marque-marketing
- Google Play Store ID: brand_-_varemerke
- NL CR Aut ID: ph166532
- Encyclopedia of Ideas ID: brand
- JSTOR Topic ID (archived): brands
- Great Russian Encyclopedia Portal ID: brend-05a5f7

### Wikidata and Wikipedia Presence
Pyrex is classified in Wikidata as an instance of Q167270 (trademark) and Q431289 (brand), and a subclass of Q11469 (glass). It has a Wikipedia presence with 25 sitelinks, including English, German, French, and Japanese. The associated Wikimedia Commons category is "Pyrex".

### Community and Topic Mapping
Pyrex is mapped to various community-driven platforms and topic directories, including Quora ("Brands-and-Branding"), Reddit ("brand"), and TED ("Brand"). It is also integrated into mapping and location services via the OpenStreetMap key "brand".

### Relationships and Semantic Distinctions
Pyrex is semantically distinct from other commercial concepts such as "Marka" and "brandmark". It is partially coincident with "commercial name" and "trademark", indicating a significant overlap in usage and definition. The entity has aliases such as "marque commerciale", "enseigne", "コーポレートデザイン" (corporate design), "牌子", and "假面戏剧" (mask drama), among others.

## References

1. Freebase Data Dumps. 2013
2. National Library of Israel Names and Subjects Authority File