Office Chair 405

The term 'Office Chair 405' may involve information from different scenarios, as detailed below:

I. Design Patent Related
There is an office chair closely associated with '405'. Its design patent application was submitted in the United States on April 23, 2024, and was published on September 3, 2024, with the patent number US D1,040,542 S. This patent is protected by U.S. law, meaning that during the patent's validity period, producing, selling, or importing products with the same or similar design without authorization constitutes infringement. This office chair was listed on Amazon on July 14, 2022, and as of September 11, 2024, it has a rating of 4.4 stars with 57 buyer reviews, indicating relatively positive market feedback. However, due to the recent issuance of the patent and the presence of numerous similar but differently branded products on Amazon, the risk of infringement for this office chair is high. If merchants plan to sell similar products, they must strictly verify the differences between their products and the patented design to avoid legal disputes arising from similar appearances.

II. Price Calculation Related
In mathematical problem scenarios, '405' may represent the total cost of purchasing office furniture. For example, if buying 2 office desks and 3 chairs costs a total of 405 yuan, and it is known that the price of 1 office desk is equal to the price of 3 chairs, the problem can be solved by setting up an equation with unknowns: Let the unit price of a chair be x yuan, then the unit price of an office desk is 3x yuan. Based on the total price relationship, the equation is 2×3x + 3x = 405, solving for x gives x = 45 yuan (unit price of the chair), and the unit price of the office desk is 135 yuan. Such problems are common in basic mathematical application questions, with the core being to establish equations through equal relationships to cultivate logical reasoning skills.

III. Product Recommendation Related
Some information mentions 'Heibaidiao (a brand) recommended by Luo Yonghao: X7 high-end smart [405-related unclear text] ergonomic 263 [unclear text] chair, computer chair, office chair', but the description contains obvious errors or is incomplete (e.g., '405-related unclear text' and '263 [unclear text]' may be garbled or input errors). If you need to refer to this product, it is recommended to check the detailed information of 'Heibaidiao X7' through legitimate channels, focusing on its ergonomic design, materials, adjustment functions, and user reviews to avoid selection deviations caused by incorrect information.