Inventory Health Breakeven Holding Time

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Solution Overview

Problem

Conventional inventory management systems fail to effectively account for holding costs, leading to inefficient inventory levels that can erode the value of stored items, as they often prioritize meeting projected demand without considering the optimal balance between holding inventory and disposing of excess stock.

Innovation Solution

A method and system that determine a healthy inventory level by calculating a breakeven holding time, where the cost of holding excess inventory equals the difference between sale and disposition values, and adjust inventory levels accordingly, allowing for the disposal of excess stock through a disposition channel to maximize value.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If inventory levels are increased to meet projected demand, then customer availability is improved, but holding costs increase

Engineering Contradiction:
Improvecustomer availabilityVSAvoidholding costs
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The system changes the parameter of inventory level determination from static demand-based thresholds to dynamic breakeven-based thresholds. By calculating the breakeven holding time and comparing it against actual holding time, the system determines optimal inventory levels that account for both demand fulfillment and holding cost minimization, rather than simply maintaining fixed safety stock levels.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system implements feedback by continuously monitoring actual holding time against the calculated breakeven holding time. When actual holding time exceeds breakeven holding time, the system triggers disposition actions to reduce inventory. This closed-loop feedback mechanism ensures inventory levels are dynamically adjusted based on real-time conditions rather than relying on static projections.

Inventive Principle:
Principle #23Feedback

2Reliability

If inventory levels are increased to buffer supply variations, then service level is improved, but inventory value decreases

Engineering Contradiction:
Improveservice levelVSAvoidinventory value
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The system changes how inventory value is determined from simple cost-based valuation to breakeven-based valuation. By calculating the breakeven holding time and comparing actual holding time against this threshold, the system identifies the optimal inventory level that maximizes inventory value while maintaining adequate service levels, rather than simply valuing inventory at cost regardless of holding duration.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system makes inventory management dynamic by continuously updating the breakeven holding time based on current conditions such as disposition channel availability, holding cost rates, and demand patterns. This dynamic approach allows the system to adapt inventory levels to changing circumstances, maximizing inventory value while maintaining service levels under varying operational conditions.

Inventive Principle:
Principle #15Dynamics

3Productivity

If conventional inventory management is used to ensure sufficient inventory, then demand coverage is improved, but holding cost efficiency deteriorates

Engineering Contradiction:
Improvedemand coverageVSAvoidholding cost efficiency
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The system changes the parameter used for inventory level determination from demand-based thresholds to breakeven-based thresholds. By calculating the breakeven holding time and using it to determine optimal inventory levels, the system achieves both adequate demand coverage and improved holding cost efficiency, as inventory is maintained only as long as it remains below the breakeven point.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system implements feedback mechanisms that monitor actual holding time against the calculated breakeven holding time and trigger disposition actions when holding time exceeds the breakeven point. This feedback loop ensures that inventory levels are dynamically adjusted to maintain optimal balance between demand coverage and holding cost efficiency, rather than relying on static inventory policies.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS7543743B1Method and system for determining inventory health with respect to a disposition channel
Publication Date: 2009.06.09 NOKIA TECHNOLOGIES OY
  • US7543743B1 patent drawing
  • US7543743B1 patent drawing
  • US7543743B1 patent drawing

AI summary

A method and system for determining inventory health with respect to a disposition channel. A method may include specifying a target inventory level of an inventory item; determining a rate of sales demand of the item; and determining a breakeven holding time of units of the item in excess of the target level, where a cost of holding a unit until the breakeven holding time equals, within an equality threshold, a difference between a sales channel value and a disposition channel value for the item. The method may additionally include determining a healthy inventory level of the item that exceeds the target inventory level by the product of the sales demand rate and the breakeven holding time, and, if a current inventory level of the item exceeds the healthy level, disposing of excess units of the item via the disposition channel.