Welker, Inc. · Intellectual Property
U.S. Patents
Welker holds 90+ U.S. patents covering innovative designs across gas sampling, odorization, chemical injection, and instrumentation technologies — a testament to more than 70 years of continuous engineering innovation.
20 Patents Listed
Instant Search
Since 1954
Patent Portfolio
90+ U.S. Patents granted
Technologies Covered
Sampling, Odorization, Instrumentation & more
Issuing Authority
U.S. Patent & Trademark Office (USPTO)
Trademarks
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Intellectual Property
Explore Our Trademark Portfolio
In addition to 90+ patents, Welker maintains an extensive portfolio of trademarks and service marks covering our branded products and technologies.
