12/19/2010
7,806,785
Golf ball with multiple cover layers
Sullivan of Acushnet, Massachusetts has developed a golf ball having a core and two or more cover layers, wherein the multiple cover layers are formed from materials that are substantially the same composition with the same Shore hardness, but are modified in some way to alter the processing or performance characteristics of the golf ball. At least one cover layer is formed of a polyurethane blend, and at least one cover layer is formed of a different polymer blend.  (RDC 12/19/2010)

9/14/2010
7,794,641
Method for producing golf ball
Nagasawa et al of Bridgestone, Japan have developed a golf ball with a high rebound and excellent spin characteristics and scuff resistance and are recyclable.  It is based on a polyurethane cover in which the resin  is conditioned to a pre-moisture content of 500 ppm or less before injecting to form the cover. The ball is also recyclable. (RDC 11/16/2010)8/31/2010

7,786,212
Polyurethane and polyurea compositions for golf balls
Shenshen et al of Acushnet have developed a polyurethane /polyurea blend for golf balls containing a freezing point depressing agent such as 2 methyl 1,3 propanediol preventing loss of pigment dispersion during freezing and thawing.  (RDC 11/5/2010)

8/31/2010
7,785,216
Golf balls including mechanically hybridized layers and methods of making same
Herbert, Sullivan and Ladd of Acushnet have improved the durability of golf balls by increasing adhesion between layers such as an ionomer layer in contact with polyurethane/polyurea layers.  This adhesion is enhanced by mechanically hybridizing theme by foaming.  (RDC 11/5/2010)

8/17/2010
7,775,909
Golf ball which includes fast-chemical-reaction-produced component and method of making same
Kennedy et al of Calloway Golf Company have developed an reaction molded polyurethane for a golf ball cover with a reaction time of five minutes or less, a thickness of at least 0.01 in and a demold time of 10 minutes.  (RDC 11/5/2010)

8/10/2010
7,772,354
Golf ball layer compositions comprising modified amine curing agents
Shenshen et of Acushnet have used modified amine curing agents with a mixture of primary amines and secondary amines for polyurethane /polyurea golf ball layers to better control reaction rates.  (RDC 11/5/2010)