using pressure difference {for pre-stretching}, e.g. pre-blowing

using pressure difference {for pre-stretching}, e.g. pre-blowing · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeB29C49/16
Official titleusing pressure difference {for pre-stretching}, e.g. pre-blowing
Display labelusing pressure difference {for pre-stretching}, e.g. pre-blowing
Total patents47

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
20156
20166
20174
20188
20196
20206
20223
20232
20242
20252
20262

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 B29C49/16?
CPC B29C49/16 is the Cooperative Patent Classification code for “using pressure difference {for pre-stretching}, e.g. pre-blowing.”
How many patents are filed under CPC B29C49/16 (using pressure difference {for pre-stretching}, e.g. pre-blowing)?
Our database includes 47 publications tagged with this CPC code.
Is patent activity under CPC B29C49/16 growing?
Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).