Prior art — US Patent 9651320

To identify the most relevant prior art for US Patent 9651320 and analyze its potential anticipation of claims under 35 U.S.C. § 102, I will first access the patent document on the USPTO website. Then, I will examine the "References Cited" section of US Patent 9651320 to extract the details of each cited patent.

Based on the provided full patent text for US9651320B2, the "Patent Citations" section lists the following prior art references:

1. JPH05100063A

Full Citation: JPH05100063A (English machine translation available)
Publication Date: April 23, 1993
Priority Date: October 8, 1991
Assignee: Matsushita Electric Ind Co Ltd
Title: Variable rotation cooling fan
Brief Description: This patent generally describes a variable rotation cooling fan. While the full details of this reference are not provided, its title suggests a system for controlling fan speed, which broadly relates to the subject matter of US9651320B2. Without further details on how the fan rotation is controlled (e.g., based on temperature declination), a direct anticipation of the specific control mechanism in US9651320B2 cannot be definitively stated. However, it potentially anticipates the general concept of a cooling fan with variable rotation.
Potential Claims Anticipated (under 35 U.S.C. § 102): Potentially anticipates elements of claims 1, 7, and 8 related to a "cooling fan" and "controlling the number of rotations of the cooling fan," but likely not the specific "declination index value" control.

2. JP2006252608A

Full Citation: JP2006252608A (English machine translation available)
Publication Date: September 21, 2006
Priority Date: March 8, 2005
Assignee: Funai Electric Co Ltd
Title: Cooling device of optical disk drive, and optical disk drive
Brief Description: This patent describes a cooling device for an optical disk drive. Similar to JPH05100063A, its relevance lies in the general field of cooling electronic equipment. The specific control methodology for the cooling device would need to be analyzed to determine if it involves detecting component temperature declination and adjusting fan speed accordingly.
Potential Claims Anticipated (under 35 U.S.C. § 102): Potentially anticipates elements of claims 1, 7, and 8 concerning "ICT equipment having an electronic component" and "a cooling fan."

3. JP2011151131A (Patent Document 1 mentioned in the Description)

Full Citation: JP2011151131A (Patent Document 1)
Publication Date: August 4, 2011
Priority Date: January 20, 2010
Assignee: Fujitsu Ltd
Title: Cooling controlling apparatus, electronic apparatus, and cooling controlling method
Brief Description: The description of US9651320B2 explicitly discusses this patent as conventional technology. It states that JP2011151131A discloses a server device with a cooling fan, an intake air temperature sensor, a component temperature sensor, and a controller. The controller adjusts the fan's rotation speed based on both intake air temperature and component temperature. Specifically, fan speed increases with higher intake air temperature (up to a first threshold for all component sensors) and then increases with higher component temperatures (up to a second threshold). The present invention (US9651320B2) identifies a problem with this prior art: the possibility of damage or malfunction due to condensation if the intake air temperature drops sharply.
Potential Claims Anticipated (under 35 U.S.C. § 102): This reference is highly relevant and anticipates several elements of independent claims 1, 7, and 8, specifically:
- Claim 1: "ICT (information and Communication Technology) equipment having an electronic component, the ICT equipment comprising: a cooling fan; a first temperature sensor that detects a component temperature of the electronic component included in the ICT equipment; a second temperature sensor that detects a temperature of an intake air; and a microprocessor including: a control unit that controls the number of rotations of the cooling fan based on... the temperature of the intake air by the second temperature sensor."
- Claim 7: Similar elements for a "control device" are anticipated, including the "cooling fan, electronic component, a first temperature sensor for detecting a temperature of the electronic component, and a second temperature sensor that detects a temperature of an intake air" and a "control unit that controls the number of rotations of a cooling fan based on... the temperature of the intake air by the second temperature sensor."
- Claim 8: The method steps of "controlling the number of rotations of a cooling fan based on... a second temperature sensor that detects a temperature of an intake air" are anticipated.
However, JP2011151131A does not appear to anticipate the specific feature of calculating an "index value indicating a degree of declination of the component temperature" and controlling the fan based on this declination index value, which is the distinguishing feature of US9651320B2.

Other citations found in the "Family Cites Families" and "Similar Documents" sections:

The patent also lists additional references under "Family Cites Families" and "Similar Documents" which are typically considered by the examiner or found to be similar in a broader search. While not directly "cited by examiner" in the same way as the patent citations, they are part of the prior art landscape. A full anticipation analysis would require reviewing each of these documents in detail. For this request, I am focusing on the "Patent Citations" section as indicated.

JP3637181B2 (Priority Date: 1997-05-09, Publication Date: 2005-04-13, Assignee: 株式会社東芝, Title: Computer system and cooling control method thereof)
US6965175B2 (Priority Date: 2002-06-14, Publication Date: 2005-11-15, Assignee: Quanta Computer Inc., Title: Dynamic temperature control method for a computer system)
US6987370B2 (Priority Date: 2003-06-23, Publication Date: 2006-01-17, Assignee: Hewlett-Packard Development Company, L.P., Title: Method and system for cooling electronic components)
US20050030171A1 (Priority Date: 2003-08-06, Publication Date: 2005-02-10, Assignee: Tse-Hung Liu, Title: Cooling system for computing device)

These documents broadly relate to cooling systems and methods for computer systems and electronic components. A detailed analysis would be needed to determine if any of these references disclose the specific "declination index value calculation" and control described in US9651320B2.

Conclusion on Most Relevant Prior Art:

Based on the patent's own description and the claims, JP2011151131A is the most relevant prior art. It sets the stage for the problem US9651320B2 aims to solve (condensation from sharp temperature drops) and discloses many of the basic elements of the ICT equipment and its temperature control, except for the core innovation of using a "declination index value" to manage fan speed to mitigate rapid temperature drops. Therefore, the novelty and non-obviousness of US9651320B2 would largely hinge on the specific "declination index value calculation" and its use in controlling the cooling fan to prevent sharp temperature drops and condensation.