Expired Patent Awareness System

BDTwo Patent Monitoring

Blooms (Plant Patents), Designs (Design Patents) & Developments (Utility Patents) distributed via Big Data.

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Patents Search Results for Utility Patent Number 6927449


Utility Patent #6927449: NONVOLATILE SEMICONDUCTOR MEMORY DEVICE HAVING ELEMENT ISOLATING REGION OF TRENCH TYPE


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Application Number: 10991521
Filing Date: 2004-11-19
Description, Images, Claims, Inventor, and history on Google Patents
USPC Classification: 257
USPC Subclassification: 316000
Application Status: Patented Case
Status Date: 2005-07-20
Patent Issue Date: 2005-08-09
Expected Expiration: 2024-11-19

Patent #6927449 is in USPC Patent Class 257 and Subclass 316000.

Macro View of Patent Class 257

Patent Class Description: Active solid-state devices (e.g., transistors, solid-state diodes)
This patent was applied for in 2004. Below is a comparison of Invention Rates in the preceding and proceeding 3 years for Patent Class 257:
Inventions in 20015428Change in %
Inventions in 2002616913.65%
Inventions in 200366367.57%
Inventions in 2004773716.59%
Inventions in 200584639.38%
Inventions in 200692188.92%
Inventions in 200796194.35%

Micro View of Patent Class 257 & Subclass 316000

Patent Subclass Description (on USPTO.gov)
This patent was applied for in 2004. Below is a comparison of Subclass Invention Rates in the preceding and proceeding 3 years for Patent Subclass 316000:
Inventions in 200133Change in %
Inventions in 20023815.15%
Inventions in 2003417.89%
Inventions in 200438-7.32%
Inventions in 20056878.95%
Inventions in 200644-35.29%
Inventions in 20077672.73%

Patent #6927449 NAICS (North American Industry Classification System)

Patents with USPC Class 257 typically affect these industries.

Macro View of USPC 257 to NAICS

USPC to NAICS probabilities:
USPC ClassNAICS CodeDescriptionAllocation
25731Manufacturing7.523%
25732Manufacturing3.828%
25733Manufacturing88.649%

Why don't the percentages in MACRO and MICRO Match?

There are rounding errors experienced when converting USPC Classes to NAICS codes. Items with less than ~2.5% influence in a category are removed for clarity. For instance, multiple Micro classes can sum up to a Macro class greater than 2.5% without being delineated. Or a Macro view shows a number far larger than the sum of Micro categories because many small contributors were not shown. Eliminating categories (Macro or Micro) with less than ~2.5% influence results in small differences between the figures above and those below (to the right).
Click for reference papers.

Micro View of USPC 257 to NAICS

USPC to NAICS probabilities:
USPC ClassNAICS CodeDescriptionAllocation
257311Food Manufacturing6.134%
257334Computer and Electronic Product Manufacturing93.866%