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The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.

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Examiner: Seldha, Tekchand

Primary examiner statistics: 2 patents; average approval time: 1247 days
Assistant examiner statistics: 0 patents; average approval time: N/A

Patent No.	Patent Title:
6475767	Process for producing L-methionine γ-lyase crystals
6361964	Eukaryotic disulfide bond-forming proteins and related molecules ...

Patent No.

Patent Title:

No patents.