These are all assigned to Boeing and related in one way or another to
"rocket" as a search term:

Aerodynamic braking and recovery method for a space vehicle:
http://www.google.com/patents/about?...ssignee:boeing

Crewed on-orbit, returnable, and reusable space vehicle:
http://www.google.com/patents/about?...ssignee:boeing

Combined cycle engines incorporating swirl augmented combustion:
http://www.google.com/patents/about?...ssignee:boeing

Boost survivable ramjet elements:
http://www.google.com/patents/about?...ssignee:boeing

Propellant cross-feed system and method (this is how to transfer fuel
from a carrier aircraft to a spaceplane being carried by it):
http://www.google.com/patents/about?...ssignee:boeing

Ramjet engine (turns from ramjet to scramjet):
http://www.google.com/patents/about?...ssignee:boeing

Airbreathing propulsion assisted flight vehicle (weird looking
ram/scramjet thing):
http://www.google.com/patents/about?...ssignee:boeing

Pulsed detonation engine with ejector bypass:
http://www.google.com/patents/about?...ssignee:boeing

Cooling system for a hypersonic aircraft:
http://www.google.com/patents/about?...ssignee:boeing

Integral propulsion and power radiant cavity receiver (solar-powered
spacecraft engine):
http://www.google.com/patents/about?...ssignee:boeing

Autonomous orbit transfer vehicle:
http://www.google.com/patents/about?...ssignee:boeing

Thermally coupled liquid oxygen and liquid methane storage vessel:
http://www.google.com/patents/about?...ssignee:boeing

Ignition system for a propulsion producing engine (decomposes hydrogen
peroxide via a laser):
http://www.google.com/patents/about?id=-1YHAAAAEBAJ&
dq=rocket+inassignee:boeing

Optical system for generating endothermic fuel for use in a propulsion
system (laser ignition for a bipropellant rocket):
http://www.google.com/patents/about?...ssignee:boeing

Method and system for orienting diamagnetic liquid in respect to a gas
in a low gravity environment (move magnetic fluids around inside of
propellant tanks with magnets):
http://www.google.com/patents/about?...ssignee:boeing

Survivable and reusable launch vehicle:
http://www.google.com/patents/about?...ssignee:boeing

Reusable launch system (three component-to-orbit reusable launch
systems):
http://www.google.com/patents/about?...ssignee:boeing

Projectile with integrated propulsion system (ASAT/ABM interceptor vehicle):
http://www.google.com/patents/about?...ssignee:boeing

Impact resistant surface insulation tile for a space vehicle:
http://www.google.com/patents/about?...ssignee:boeing

Method of producing a multi-layer ceramic fiber insulation tile:
http://www.google.com/patents/about?...ssignee:boeing

MAGNETODYNAMIC PLASMA ACCELERATOR DEVICE (plasma drive engine technology):
http://www.google.com/patents/about?...ssignee:boeing


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