U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Inventor: David Ernest Havens


Address: Bellbrook, OH
No. of patents: 2
Last patent issue date: 10/11/2011

NumberTitleIssue Date
8033237Environmental condition cumulative tracking integration sensor using shape memory polymer
The present invention utilizes the unique shape recovery properties of shape memory materials, especially shape memory polymers, to provide an inexpensive and easily identified method of determining when a product has been exposed to environmental conditions that wo...
10/11/2011
6986855Structural and optical applications for shape memory polymers (SMP)
The methods of manufacturing molds from shape memory materials and molds made thereby, in accordance with the present invention, provide numerous advantages for molding castable composite parts. The initial mold cost is low enough to accommodate economical productio...
01/17/2006
 
Sign InRegister
Username  
Password   
forgot password?