Patents

I started adding patents to the blog one at a time as they cropped up in the files.  This approach is more efficient.  Here's a live screendump from the US patent database when "Courtaulds" is the assignee and "Amine Oxide" or "Lyocell" is anywhere in the text.  There will be others which can be added when they come to light.  Patents can be read by clicking on the title.  Image files should appear if you have a TIFF viewer (e.g. Quicktime) installed.  The filing date range is 1983 to 1997. (NB - Lenzing Patents have now been added.)

	PAT. NO.		Title
1	5,882,356		Fibre treatment
2	5,779,737		Fibre treatment
3	5,759,210		Lyocell fabric treatment to reduce fibrillation tendency
4	5,702,515		Stabilised solutions of polysaccharide
5	5,671,768		Emergency dump tank for congealable materials
6	5,652,001		Spinnerette
7	5,651,794		Dyeing of cellulose
8	5,639,484		Spinning cell
9	5,601,765		Method for manufacturing crimped solvent-spun cellulose fibre of controlled quality
10	5,591,388		Method of making crimped solvent-spun cellulose fibre
11	5,582,843		Manufacture of solvent-spun cellulose fibre and quality control means therefor
12	5,580,356		Fibre treatment method
13	5,580,354		Process for reducing the fibrillation tendency of solvent-spun cellulose fibre
14	5,562,739		Lyocell fiber treatment method
15	5,534,113		Forming solutions
16	5,527,178		Jet assembly
17	5,526,840		Emergency dump tank for congealable materials
18	5,520,869		Treatment of fibre
19	5,507,983		Monitoring concentration of dope in product manufacture
20	5,456,748		Premix storage hopper
21	5,441,689		Process of making regenerated cellulose articles
22	5,421,525		Filtering particulate cellulosic-based material
23	5,415,697		Cleaning of spinnerette jets
24	5,413,631		Formation of a cellulose-based premix
25	5,403,530		Elongate member production method
26	5,401,304		Method for the manufacture of solvent-spun cellulose fibre involving transport of cellulose solution through pipes
27	5,395,516		Filtration system
28	5,372,653		Cleaning of filters
29	5,370,322		Filtering particulate cellulosic-based material
30	5,354,371		Transport of solutions of cellulose through pipes
31	5,277,857		Method of making a cellulose food casing Here are some more from a search for Courtaulds and lyocell

1	5,839,448		Absorbent articles
5	5,738,119		Filter materials
6	5,725,821		Process for the manufacture of lyocell fibre
7	5,709,716		Fibre treatment
8	5,690,874		Fiber production process
10	5,671,757		Cigarette filters
12	5,609,957		Fiber
13	5,601,765		Method for manufacturing crimped solvent-spun cellulose fibre of controlled quality
15	5,582,843		Manufacture of solvent-spun cellulose fibre and quality control means therefor
			Patents from a search for Lenzing and Amine Oxide

20 5,863,478 Process for the manufacture of cellulose fibres 21 5,858,285 Process for the production of an aqueous solution of a tertiary amine-oxide 22 5,837,184 Process for the production of cellulose fibres having a reduced tendency to fibrillation 23 5,827,463 Process for manufacturing cellulose moulded bodies 24 5,798,125 Device for the preparation of cellulose mouldings 25 5,795,522 Cellulose fibre 26 5,795,488 Process for transporting a solution of cellulose in an aqueous tertiary amine-oxide 27 5,788,939 Process for the production of a cellulose moulded body 28 5,773,655 Process for the purification of an aqueous solution of a tertiary amine-oxide 29 5,766,530 Process for the production of cellulose moulded bodies 30 5,698,151 Process of making cellulose fibres 31 5,679,146 Moulding materials and spinning materials containing cellulose 32 5,662,858 Process for the production of cellulose fibres having a reduced tendency to fibrillation 33 5,656,224 Process for the production of a cellulose suspension 34 5,653,931 Process for the production of cellulose moulded bodies 35 5,628,941 Process for the production of cellulose moulded bodies 36 5,626,810 Process for the preparation of cellulose solutions 37 5,607,639 Process for the preparation of cellulose sheet 38 5,603,883 Process of and apparatus for making celluose products 39 5,602,247 Process for the purification of aqueous solutions of tertiary amine-oxides 40 5,601,771 Process for the production of cellulose fibres 41 5,601,767 Process for the production of a cellulose moulded body 42 5,589,125 Process of and apparatus for making cellulose mouldings 43 5,582,783 Process for controlling a flowing cellulose suspension 44 5,556,452 Moulding materials and spinning materials containing cellulose 45 5,543,101 Process of making cellulose fibres 46 5,486,230 Stable moulding material and spinning material containing cellulose 47 5,330,567 Process and arrangement for preparing a solution of cellulose 48 5,252,284 Method of producing shaped cellulosic articles 49 5,094,690 Process and arrangement for preparing a solution of cellulose