Ian P Shaeffer

San Jose, CA, United States of America

Ian P Shaeffer

This inventor holds 235 USPTO granted patents and 20 published patent applications and 10 EPO patents, primarily in Memory System Design (CPC class G11C11-4076). Top assignees: Rambus Inc., Apple Inc., Hewlett-Packard Development Company, L.p.. Active years: 2001-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ian P Shaeffer. Retrieved from https://idiyas.com/inventor/ian-p-shaeffer

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 235 

% Patents Active = 96.6

 

Average Co-Inventor Count = 2.4

ph-index = 16

Forward Citations = 1,140(Granted Patents)

Forward Citations (Not Self Cited) = 811(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • San Jose, CA (US) (2001 - 2020)
  • Palo Alto, CA (US) (2020 - 2023)
  • Los Gatos, CA (US) (2010 - 2024)

Company Filing History:


Years Active: 2001-2026

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Areas of Expertise:
Memory System Topologies
Data Interface Terminations
Memory Error Detection
On-Die Termination
Timing Reference Signal
Memory Calibration
Staggered Request Output
Fractional Row Activation
Programmable Interfaces
Clock Generation
Command Buffer
Folded Memory Modules
235 patents (USPTO):Explore Patents

Title: Ian Shaeffer: Innovator Extraordinaire in the Field of Memory Modules

Introduction:

In the realm of technology, individuals like Ian Shaeffer transform industry landscapes through their groundbreaking inventions and patents. Ian Shaeffer, hailing from Los Gatos, CA in the United States, has made substantial contributions to the field of memory modules. With an impressive catalog of 174 patents, Shaeffer's work has revolutionized the way we perceive and utilize memory in various devices.

Latest Patents: Folded Memory Modules and On-Die Termination

Among his latest patents, two notable inventions stand out: folded memory modules and on-die termination.

Folded Memory Modules: Shaeffer's innovative concept for folded memory modules offers a novel solution to optimize memory module width. By utilizing configurable switches, users can enable or disable different subsets of these switches to modify the effective width of a memory module. The flexibility provided by this invention allows for efficient customization of memory capabilities based on specific requirements. Control mechanisms, such as manual switches, external memory controllers, or memories on the memory module itself, enable easy adaptability.

On-Die Termination: Shaeffer's on-die termination invention addresses the termination of high-speed signaling links. The introduction of local on-die termination controllers facilitates simultaneous engagement of termination structures within multiple integrated-circuit memory devices. This innovation significantly enhances signal integrity and performance. The incorporation of a termination control bus enables peer-to-peer communication of termination control signals among memory devices on a module.

Career Highlights:

Ian Shaeffer's career boasts an impressive association with renowned companies. He has made significant contributions at Rambus Inc. and Apple Inc. in shaping the technological landscape in the memory module domain. While his work in these companies is not explicitly highlighted, their prominence within the industry underscores Shaeffer's noteworthy achievements.

Collaborations:

Throughout his career, Shaeffer has had the privilege of collaborating with talented and ambitious individuals. Two notable colleagues include Kyung Suk Oh and Frederick A. Ware. These collaborations have likely fostered an exchange of ideas, further propelling Shaeffer's innovative journey.

Conclusion:

Ian Shaeffer's contributions to the field of memory modules have catapulted him into the realm of true innovators. With 174 patents to his name, including folded memory modules and on-die termination, Shaeffer's inventions have revolutionized memory module design and performance. His affiliation with industry-leading companies and collaborations with talented peers highlight his impact on the technology landscape. Ian Shaeffer continues to be a driving force in the evolution of memory technology, and his work serves as an inspiration to aspiring inventors and engineers in the field.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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