having means for preventing complete unscrewing of screw or nut

having means for preventing complete unscrewing of screw or nut · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeH01R4/301
Official title{having means for preventing complete unscrewing of screw or nut}
Display labelhaving means for preventing complete unscrewing of screw or nut
Total patents51

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
20151
20165
20178
20188
20199
20202
20211
20224
20234
20245
20253
20261

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC H01R4/301?
CPC H01R4/301 is the Cooperative Patent Classification code for “having means for preventing complete unscrewing of screw or nut.”
How many patents are filed under CPC H01R4/301 (having means for preventing complete unscrewing of screw or nut)?
Our database includes 51 publications tagged with this CPC code.
Is patent activity under CPC H01R4/301 growing?
Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).