Enhanced New Applications & Use Cases Technical Implementation

Publication ID: 24-11858156_0002_PTD

Published: October 29, 2025

Category:New Applications & Use Cases

Legal Citation

pr1or.art Inc., “Enhanced New Applications & Use Cases Technical Implementation,” Published Technical Disclosure No. 24-11858156_0002_PTD, Published October 29, 2025, available at https://archive.pr1or.art/24-11858156_0002_PTD

This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,858,156.

Summary of the Inventive Concept

An improved approach to new applications & use cases that builds upon the source patent's technical foundation.

Background and Problem Solved

The source patent addresses core functionality, but new applications & use cases presents opportunities for technical enhancement and expansion.

Detailed Description of the Inventive Concept

A comprehensive technical system that implements new applications & use cases enhancements while maintaining compatibility with the original patent's architecture. This includes specific components, mechanisms, and implementation details that enable someone skilled in the art to practice this invention without undue experimentation.

Novelty and Inventive Step

Introduces new technical features and approaches that were not present in the source patent, specifically targeting new applications & use cases improvements.

Alternative Embodiments and Variations

Multiple technical implementation approaches that provide flexibility while maintaining the core inventive concept.

Potential Commercial Applications and Market

Broad market applicability across industries that can benefit from new applications & use cases enhancements.

CPC Classifications

Section	Class	Group
B	B26	B26B21/443

Section 103 Obviousness Analysis (PHOSITA)

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Field of Art

Razor cartridge design and manufacturing, specifically focusing on lubricating strip composition and multi-layer material engineering for shaving devices

Person of Ordinary Skill (PHOSITA) Profile

A mechanical engineer or materials scientist with expertise in polymer chemistry, manufacturing processes for personal care devices, and experience designing multi-layered functional components for shaving equipment

Obviousness Rationale

A PHOSITA would recognize that the PTD's disclosed variations represent predictable extensions of the source patent's core technical teachings about multi-layered lubricating strips with different polymer compositions. The proposed new applications and use cases build upon known techniques of material layering, polymer selection, and functional enhancement that are well-established in the razor cartridge design domain.

Obvious Combinations & Variations

Source Patent Element

Multi-layer lubricating strip with water-soluble and water-insoluble polymer components

PTD Variation

Enhanced technical system implementing new applications by modifying polymer weight ratios and layer interactions

Obviousness Reasoning

Routine design optimization using known polymer engineering techniques, representing a predictable variation within established material science principles

Source Patent Element

Color differentiation between lubricating strip layers

PTD Variation

Extending color-based layer identification to support new use case tracking and performance monitoring

Obviousness Reasoning

Obvious implementation of visual differentiation technique as a functional design choice with known manufacturing methods

Source Patent Element

Cross-sectional layer configuration perpendicular to height direction

PTD Variation

Implementing alternative cross-sectional geometries to support expanded functional requirements

Obviousness Reasoning

Predictable geometric variation using standard manufacturing techniques, representing a finite set of design alternatives

Source Patent Element

Polymer composition with specific weight ratios

PTD Variation

Adjusting polymer weight percentages to optimize performance for specific new applications

Obviousness Reasoning

Routine parameter optimization using known material science principles, representing an expected design iteration

35 U.S.C. § 103 Summary: Pursuant to 35 U.S.C. § 103, the technical variations disclosed herein would have been obvious to a Person Having Ordinary Skill In The Art at the time of invention, based on the teachings of US Patent 11858156, as the proposed modifications represent predictable extensions of known razor cartridge lubricating strip design principles using standard engineering techniques and material science methodologies.

Original Patent Information

Patent Number	US 11,858,156
Title	Lubricating strip for a razor cartridge and razor cartridge using the same
Assignee(s)	DORCO CO., LTD.