Portfolio comparison
Hewlett Packard Co vs Amgen Inc
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Hewlett Packard Co
Patents indexed
1
Year range
1984
Most recent
1984
consumer_electronicsmechanical
Top Patents1 enriched
US 4490728· 1984
How Thermal Inkjet Printers Use Two-Step Heating to Shoot Ink
Activity by Decade
1980s1
Top Patents1 enriched
US 5574018· 1996
Using Vitamin B12 to Help Proteins Survive the Human Digestive System
Activity by Decade
1990s1
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